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# Index to constants in OEIS

## Description

• If there is an entry in the OEIS which gives the decimal expansion of some constant XYZ and has A-number A123456, say, then this file contains a line which says: XYZ: See A123456.
• Warning: this is a very large file, with about 10000 lines.
• Once it has been cleaned up, this file should be broken up into several subfiles.
• The entries are arranged in the order produced by the Unix "sort -f" command. (However, because of later editing, some lines are now out of order.)
• There are probably many missing entries, and also entries that should not be here. Please help by editing this file.
• Note that the usual name for a sequence of this type in the OEIS is "Decimal expansion of XYZ." (Don't say "Decimal digits of XYZ".)
• Some of these entries are not exactly the decimal expansion, but are closely related to the decimal expansion — that is OK.
• If you create a new sequence for Decimal expansion of XYZ, please add a line here saying "XYZ: See A******<br>" and place it in the correct place in the alphabetical order
• To make it slightly easier to edit this file, temporary subheadings saying "Start of Section XXX" have been inserted at random places in this page. These subheadings will be removed or changed later.

## List of constants and their A-numbers

### Start of section 0

"alternating Euler constant" beta = li(2) - gamma. See A269330
"alternating Euler constant" log(4/Pi). See A094640
"beta", a Kneser-Mahler polynomial constant (a constant related to the asymptotic evaluation of the supremum norm of polynomials). See A242710
"binary" Copeland-Erdos constant: concatenate primes in base two = 0.7341215154082861206062782... See A066747
"binary" Liouville number. See A092874
"e*Pi" constant c_0*d_0 + c_1*d_1/10 + c_2*d_2/100 + c_3*d_3/1000 + ... where c_0 + c_1/10 + c_2/100 + c_3/1000 + ... and d_0 + d_1/10 + d_2/100 + d_3/1000 + ... (with c_k, d_k in the range 0 to 9) are the decimal expansions of e and Pi. See A292101
"I Love You" constant. See A212708
"Inverted" decimal expansion of Pi. See A065529
"lemniscate case". See A093341
"Pi AND e" (Piande) constant. See A291854
"Pi OR e" (Piore) constant. See A291858
"squircle" perimeter. See A186642
"value" -Sum_{n>=1} (-1)^n / n^(1/n). See A215608
'a', an auxiliary constant associated with the asymptotic probability of success in the secretary problem when the number of applicants is uniformly distributed. See A246664
'alpha', the threshold angle associated with the best constant in [a variation of] Hardy's inequality for a domain defined as a non-convex plane sector of angle alpha. See A246856
'B', a Young-Fejér-Jackson constant linked to the positivity of certain sine sums. See A227425
'b', an auxiliary constant associated with the asymptotic probability of success in the full information version of the secretary problem. See A246667
'b', an optimal stopping constant associated with the secretary problem when the objective is to maximize the hiree's expected quality. See A245771
'beta', a constant appearing in the random links Traveling Salesman Problem. See A242071
'beta', an auxiliary constant associated with the optimal stopping problem on patterns in random binary strings. See A246770
'C' (as designated by D. Shanks), a constant appearing in the second order term of the asymptotic expansion of the number of non-hypotenuse numbers not exceeding a given bound. See A244662
'c', a binary search tree constant associated with an asymptotic probability. See A246546
'c', a constant linked to an estimate of density of zeros of an entire function of exponential type. See A240358
'c', a constant related to the asymptotic evaluation of the Lebesgue constants L_n. See A243277
'c', a constant such that in N steps, the mean longest random walk duration records grow as c*N. See A241033
'c', an asymptotic constant related to a variation of the "Secretary problem" with a uniform distribution. See A243533
'C', an auxiliary constant defined by D. Broadhurst and related to Bessel moments (see the referenced paper about the elliptic integral evaluations of Bessel moments). See A273959
'c', an optimal stopping constant associated with the two choice case. See A246673
'c', one of Polya's Random Walk constants, related to the asymptotics of the number of 3-D random walks starting from and returning to the origin. See A241624
'c2', a constant (negated) closely related to 'c1', the Quinn-Rand-Strogatz (QRS) constant of nonlinear physics. See A244850
'chi', a constant appearing in the asymptotic variance of the number of comparisons required for updating a digital search tree, in case of the "approximate counting" algorithm. See A245617
'delta', a constant arising in the asymptotics of the regularized product of the Fibonacci numbers. See A241990
'eta', a constant related to the second order quadratic recurrence q(0)=q(1)=1, q(n)=q(n-2)*(q(n-1)+1). See A243968
'etaHat', a constant used in the asymptotic evaluation of e.g.f. coefficients for the number of labeled mobiles. See A243396
'g', a constant related to the asymptotic distribution of the Q moment and the logarithmic divergence of the Ising specific heat. See A245724
'kappa', an asymptotic enumeration constant related to unit interval graphs. See A272354
'lambda', a constant such that exp(lambda*Pi) is the best-known upper bound (as given by Julian Gevirtz) of the John constant for the unit disk. See A244381
'lambda', a Sobolev isoperimetric constant related to the "membrane inequality", arising from the study of a vibrating membrane that is streched across the unit disk and fastened at its boundary. See A244355
'lambda', a Sobolev isoperimetric constant related to the "rod inequality", arising from the elasticity study of a rod that is clamped at both ends. See A244350
'lambda', a Somos quadratic recurrence constant mentioned by Steven Finch. See A268107
'lambda', a Young-Fejér-Jackson constant linked to the positivity of certain sine sums. See A227423
'lambda', the Lyapunov exponent characterizing the asymptotic growth rate of the number of odd coefficients in Pascal trinomial triangle mod 2, where coefficients are from (1+x+x^2)^n. See A242049
'mu', a percolation constant associated with the asymptotic threshold for 3-dimensional bootstrap percolation. See A246686
'mu', a Sobolev isoperimetric constant related to the "membrane inequality", arising from the study of a vibrating membrane that is streched across the unit disk and fastened at its boundary. See A244354
'mu', a Sobolev isoperimetric constant related to the "rod inequality", arising from the elasticity study of a rod that is clamped at both ends. See A244347
'mu', a Young-Fejér-Jackson constant linked to the positivity of certain sine sums. See A227424
'mu', an isoperimetric constant associated with the study of a vibrating, homogeneous plate clamped at the boundary of the unit disk. See A245292
'nu', a coefficient related to the variance for searching corresponding to patricia tries. See A245675
'rho', an auxiliary constant associated with the asymptotic number of values of the Euler totient function less than a given number. See A246746
'sigma', a constant associated with the expected number of random elements to generate a finite abelian group. See A249141
'tau' (named sigma_2 by C. Pomerance), a constant associated with the expected number of random elements to generate a finite abelian group. See A245055
'theta', the expected degree (valency) of the root of a random rooted tree with n vertices. See A261124
'theta', the unique positive root of the equation polygamma(x) = log(Pi), where polygamma(x) gives gamma'(x)/gamma(x), that is the logarithmic derivative of the gamma function. See A244619
'u', an auxiliary constant associated with the asymptotic number of row-convex polyominoes. See A246772
'v', a parking constant associated with the asymptotic variance of the number of cars that can be parked in a given interval. See A247392
'v', an auxiliary constant associated with the asymptotic number of row-convex polyominoes. See A246773
'V', the value of a 4-dimensional iterated integral studied by David Broadhurst in connection with Quantum Field Theory (negated). See A274400
'xi', a constant related to the second order quadratic recurrence q(0)=q(1)=1, q(n)=q(n-2)*(q(n-1)+1). See A243967
'xi', an optimal stopping auxiliary constant associated with the two choice case. See A246672
'xiHat', a constant used in the asymptotic evaluation of e.g.f. coefficients for the number of labeled mobiles. See A243395
((-1-sqrt(5))/2+sqrt((5+sqrt(5))/2))*e^((2*Pi)/5). See A091667
((1+sqrt(5))/2)^3. See A098317
((1/e)^(1/e))^(1/e). See A073232
((1/exp(1))^(1/exp(1)))^2. See A258707
((1/Pi)^(1/Pi))^(1/Pi). See A073242
((4 + 3*log(3))/3)^(2/3)/2. See A086307
((5 - 2*sqrt(2))*Pi)/24. See A093823
((Pi*(15+7*sqrt(5))^2)/(12*(25+10*sqrt(5))^(3/2)))^(1/3), the sphericity of the dodecahedron. See A273636
((Pi*(3+sqrt(5))^2)/(60*sqrt(3)))^(1/3), the sphericity of the icosahedron. See A273637
((Pi/e^2) * A161771^2). See A165267
(-1)*c(1) where, in a neighborhood of zero, Gamma(x)=1/x+c(0)+c(1)*x+c(2)*x^2+...(Gamma(x) denotes the Gamma function). See A070860
(-1)*c(2) where, in a neighborhood of zero, Gamma(x)=1/x+c(0)+c(1)*x+c(2)*x^2+...(Gamma(x) denotes the Gamma function). See A082864
(-1)*Gamma'(1/2)/Gamma(1/2) where Gamma(x) denotes the Gamma function. See A020759
(-1)*Gamma'(1/3)/Gamma(1/3) where Gamma(x) denotes the Gamma function. See A047787
(-1)*Gamma'(1/4)/Gamma(1/4) where Gamma(x) denotes the Gamma function. See A020777
(-1)*lim_{k->inf} log^k(2^^k), where log^k(x) denotes repeated natural logarithm log(log(...(log(x)))) with k log's and 2^^k denotes a power tower 2^2^...^2 with k 2's. See A225092
(-1)^(I Pi). See A135544
(-1)^i. See A093580
(-3*sqrt(3)+4*Pi)/6. See A093731
(-6+sqrt(89))/2. See A190264
(-Exp[ -1])^(-Exp[ -1]) is the value of z^z where Abs[z^z] achieves its unique local maximum. A119418 gives the continued fraction expansion of the corresponding real part. A119419 gives the continued fraction expansion. A119420 gives the decimal expansion of the corresponding real part. See A119421
(-Exp[ -1])^(-Exp[ -1]) is the value of z^z where Abs[z^z] achieves its unique local maximum. A119418 gives the continued fraction expansion of the corresponding real part. A119420 gives the decimal expansion of the corresponding real part. A119421 gives the decimal expansion. See A119419
(-Exp[ -1])^(-Exp[ -1]) is the value of z^z where Abs[z^z] achieves its unique local maximum. A119418 gives the continued fraction expansion. A119419 gives the continued fraction expansion of the corresponding imaginary part. A119421 gives the decimal expansion of the corresponding imaginary part. See A119420
(-Exp[ -1])^(-Exp[ -1]) is the value of z^z where Abs[z^z] achieves its unique local maximum. A119419 gives the continued fraction expansion of the corresponding imaginary part. A119420 gives the decimal expansion. A119421 gives the decimal expansion of the corresponding imaginary part. See A119418
(1 + (sqrt(1 + 4*((1 + sqrt(5)) / 2)))) / 2. See A275828
(1 + 4*e^(-3/2))/(3*sqrt(2*Pi)). See A238387
(1 + log(2 Pi))/2, the entropy of the standard normal distribution. See A122914
(1 + Pi)/2. See A269430
(1 + sqrt(5))/8, the golden ratio divided by 4. See A134944
(1 + x + sqrt(14+10x))/4, where x=sqrt(5). See A189970
(1 - 2/Pi)/2: ratio of the area of a circular segment with central angle Pi/2 and the area of the corresponding circular half-disk. See A258146
(1 u)c/h in m^-1. See A254177
(1 u)c^2 in E_h. See A254175
(1 u)c^2/h in Hz. See A254176
(1 u)c^2/k in K. See A254178
(1+(+1+ ... )^(1/e))^(1/e))^(1/e)). See A094689
(1+(1+(1+ ... )^(1/k))^(1/k))^(1/k), with k integer and k<0. Case k=-10. See A230158
(1+(1+(1+ ... )^(1/k))^(1/k))^(1/k), with k integer and k<0. Case k=-3. See A230151
(1+(1+(1+ ... )^(1/k))^(1/k))^(1/k), with k integer and k<0. Case k=-4. See A230152
(1+(1+(1+ ... )^(1/k))^(1/k))^(1/k), with k integer and k<0. Case k=-5. See A230153
(1+(1+(1+ ... )^(1/k))^(1/k))^(1/k), with k integer and k<0. Case k=-6. See A230154
(1+(1+(1+ ... )^(1/k))^(1/k))^(1/k), with k integer and k<0. Case k=-7. See A230155
(1+(1+(1+ ... )^(1/k))^(1/k))^(1/k), with k integer and k<0. Case k=-8. See A230156
(1+(1+(1+ ... )^(1/k))^(1/k))^(1/k), with k integer and k<0. Case k=-9. See A230157
(1+(1+(1+ ... )^(1/k))^(1/k))^(1/k), with k integer and k<0. Case k=10. See A230163
(1+(1+(1+ ... )^(1/k))^(1/k))^(1/k), with k integer and k<0. Case k=6. See A230159
(1+(1+(1+ ... )^(1/k))^(1/k))^(1/k), with k integer and k<0. Case k=7. See A230160
(1+(1+(1+ ... )^(1/k))^(1/k))^(1/k), with k integer and k<0. Case k=8. See A230161
(1+(1+(1+ ... )^(1/k))^(1/k))^(1/k), with k integer and k<0. Case k=9. See A230162
(1+3*sqrt(5))/11. See A189962
(1+sqrt(-1+2*sqrt(5)))/2. See A190157
(1+sqrt(-3+4*sqrt(2)))/2. See A190179
(1+sqrt(1+2x))/2, where x=sqrt(2). See A190260
(1+sqrt(1+e^2))/e. See A188885
(1+sqrt(1+pi^2))/pi. See A188883
(1+sqrt(1+r))/r, where r=sqrt(2). See A190281
(1+sqrt(10))/3. See A177346
(1+sqrt(101))/10. See A188658
(1+sqrt(17))/4. See A188934
(1+sqrt(2))/2. See A174968
(1+sqrt(2)+sqrt(7+6*sqrt(2)))/2. See A190177
(1+sqrt(26))/5. See A188659
(1+sqrt(37))/6. See A188935
(1+sqrt(5)+sqrt(2*(5+sqrt(5))))/(2*e^((2*Pi)/5)). See A091899
(1+sqrt(65))/8. See A188656
(1+x+sqrt(8+2x))/4, where x=sqrt(15). See A190182
(1-C_2)/e, a constant connected with two-sided generalized Fibonacci sequences, where C_2 is the Euler-Gompertz constant. See A245780
(1/105)*Pi^3. See A222071
(1/12)! = Gamma(13/12). See A203081
(1/144)*3^(1/2)*Pi^3. See A222070
(1/16)! = Gamma(17/16). See A203080
(1/16)*Pi^2. See A222068
(1/1920)*Pi^5. See A222074
(1/2) Product_{p prime} 1+1/(p-1)^3, a constant related to I. M. Vinogradov's proof of the "ternary" Goldbach conjecture. See A271951
(1/2)(1 + Sum_{k>=1} (1/2)^T(k)), where T=A000217 (triangular numbers); based on row 1 of the natural number array, A000027. See A190404
(1/2)*(-9*sqrt(3) + 5*Pi). See A118309
(1/2)*log(Pi). See A155968
(1/2)*sqrt(3/Pi). See A137209
(1/2)^(1/2)^(1/2). See A220782
(1/2)^(1/2)^(1/2)^(1/2). See A193178
(1/2)^(1/3). See A270714
(1/24)! = Gamma(25/24). See A203079
(1/3) * (Pi/sqrt(3) - log(2)). See A193534
(1/3) + (1/7) + (1/31) + (1/127) + (1/8191) + (1/131071) + (1/524287) + ... = .5164541789407885653304873429715228588159685534154197. See A173898
(1/3)! = Gamma(4/3). See A202623
(1/3)*arccos(6/Pi^2-1). See A191102
(1/3)^(1/3). See A072365
(1/30)*2^(1/2)*Pi^2. See A222069
(1/384)*Pi^4. See A222072
(1/4)! = Gamma(5/4). See A068467
(1/48)! = Gamma(49/48). See A203078
(1/6)! = Gamma(7/6). See A203126
(1/8)! = Gamma(9/8). See A203125
(1/e) * (A161771/2)^(3/2). See A165268
(1/e) * log_10(e), where 1/e = A068985, log_10(e) = A002285. See A220261
(1/e)^(1/e). See A072364
(1/e)^(1/e)^(1/e). See A073231
(1/e)^e. See A073230
(1/Pi)*(1-1/Pi). See A145663
(1/Pi)*acos(1/sqrt(3)) See A237558
(1/Pi)^(1/e). See A231738
(1/Pi)^(1/Pi). See A073240
(1/Pi)^(1/Pi)^(1/Pi). See A073241
(1/Pi)^Pi. See A073239
(10 + sqrt(105))/2. See A176535
(10+2*sqrt(30))/5. See A176215
(10+sqrt(110))/2. See A176531
(10+sqrt(110))/4. See A176323
(10+sqrt(110))/5. See A176220
(1003+462*sqrt(2))/761. See A160201
(103+2*sqrt(4171))/162. See A177158
(105507+65798*sqrt(2))/223^2. See A159811
(10659+6110*sqrt(2))/79^2. See A159760
(107+42*sqrt(2))/89. See A160056
(1084467+707402*sqrt(2))/647^2. See A159643
(10^(1/3)-1)/2, an approximation to Euler-Mascheroni constant. See A242220
(11+3*sqrt(2))/(11-3*sqrt(2)). See A157123
(11+3*sqrt(21))/17. See A178131
(11+sqrt(229))/18. See A178233
(11/4)^(1/3). See A111728
(111+sqrt(25277))/158. See A178308
(11111111/10^8)^(1/4). See A210623
(1179+506*sqrt(2))/937. See A160210
(119187+47998*sqrt(2))/313^2. See A160576
(12*Pi)/715. See A093591
(12+2*sqrt(38))/3. See A176459
(12+2*sqrt(39))/3. See A176456
(12+2*sqrt(42))/3. See A176454
(12+3*sqrt(35))/19. See A177957
(1208787+678878*sqrt(2))/857^2. See A160208
(124+sqrt(16926))/25. See A177015
(129+16*sqrt(2))/127. See A159467
(129+44*sqrt(2))/113. See A161480
(13-5*sqrt(5))/2. See A226765
(1304787+843542*sqrt(2))/727^2. See A159895
(130803+73738*sqrt(2))/281^2. See A157350
(137283+87958*sqrt(2))/241^2. See A159567
(14+4*sqrt(14))/7. See A176217
(14+5*sqrt(10))/9. See A255941
(14+sqrt(210))/4. See A176440
(15+4*sqrt(15))/3. See A176533
(15+4*sqrt(15))/5. See A176403
(15+7*sqrt(5))/6. See A176324
(15+sqrt(1365))/30. See A178149
(15+sqrt(229))/2. See A166126
(15+sqrt(230))/5. See A176906
(15+sqrt(235))/3. See A176536
(15+sqrt(255))/10. See A176109
(15+sqrt(255))/3. See A176530
(15+sqrt(255))/5. See A176397
(15+sqrt(255))/6. See A176320
(15+sqrt(285))/10. See A176103
(15+sqrt(285))/6. See A176318
(15+sqrt(365))/10. See A176979
(15+sqrt(465))/12. See A190181
(1539+850*sqrt(2))/31^2. See A157648
(161+sqrt(44310))/259. See A178038
(16131+6970*sqrt(2))/113^2. See A161481
(1683+58*sqrt(2))/41^2. See A157300
(17+2*sqrt(210))/29. See A178331
(171+26*sqrt(2))/167. See A159778
(1760979+1141390*sqrt(2))/839^2. See A159898
(18+3*sqrt(38))/4. See A176521
(18+5*sqrt(2))/(18-5*sqrt(2)). See A157216
(187+78*sqrt(2))/151. See A161484
(19+6*sqrt(2))/17. See A156163
(1947891+1218490*sqrt(2))/953^2. See A160214
(19491+12070*sqrt(2))/97^2. See A157471
(195+sqrt(65029))/314. See A177038
(2 * log(3))/log(7). See A113211
(2 + 4*sqrt(2) + (4 + sqrt(2))*arcsinh(1))/30. See A093063
(2 + sqrt(2) + 5*arcsinh(1))/15. See A091505
(2 + sqrt(2) + 5*arcsinh(1))/9. See A091506
(2 - 3*sqrt(3)/Pi)/6: ratio of the area of a circular segment with central angle Pi/3 and the area of the corresponding circular half-disk See A258148
(2*(3 - sqrt(3)))/3. See A093821
(2*Pi)^12. See A199712
(2*Pi)^2. See A212002
(2*Pi)^3. See A212003
(2*Pi)^4. See A212004
(2*Pi)^5. See A212005
(2*Pi)^6. See A212006
(2*Pi)^7. See A212007
(2*Pi^5*log(2) - 30*Pi^3*zeta(3) + 225*Pi*zeta(5))/320. See A194656
(2+sqrt(10))/3. See A177703
(2+sqrt(13))/3. See A188655
(2+sqrt(14))/4. See A177033
(2+sqrt(29))/5. See A188730
(2+sqrt(5))/2. See A176055
(2+sqrt(5)+sqrt(15-6*sqrt(5)))/2. See A286984
(2+sqrt(6))/2. See A176051
(2+sqrt(6))/4. See A174925
(2-sqrt(e))^2, the mean fraction of guests without a napkin in Conway’s napkin problem. See A248788
(2/(3 - 2^(1/2)))^(1/4). See A230437
(2/27)*(9 + 2*sqrt(3)*Pi). See A248179
(2/3)! = Gamma(5/3). See A203129
(2/3)*cos( (1/3)*arccos(29/2) ) + 1/3. See A092526
(2/Pi)*Integral_{x=0..Pi} sin(x)/x. See A036793
(2/Pi)log(phi), the exponential rate factor of golden spiral. See A212225
(20+2*sqrt(105))/5. See A176460
(20+2*sqrt(110))/5. See A176455
(201+20*sqrt(2))/199. See A159549
(204819+83570*sqrt(2))/409^2. See A160579
(2052963+1343918*sqrt(2))/881^2. See A159692
(209+60*sqrt(2))/191. See A161488
(21+5*sqrt(21))/14. See A176106
(21+5*sqrt(21))/6. See A176435
(21+5*sqrt(26))/19. See A177153
(21+sqrt(469))/6. See A176442
(21+sqrt(483))/6. See A176438
(21+sqrt(483))/7. See A176399
(213651+31850*sqrt(2))/457^2. See A160582
(221+11*sqrt(1086))/490. See A178229
(227+30*sqrt(2))/223. See A159810
(232405+sqrt(71216963807))/348378. See A177933
(24*sqrt(2) - 6*sqrt(3) - 2*Pi)*Pi/72. See A093824
(243+17*sqrt(285))/402. See A178148
(243+22*sqrt(2))/241. See A159566
(24723+6758*sqrt(2))/151^2. See A161485
(2487411+1629850*sqrt(2))/967^2. See A159703
(24e^5-96e^4+108e^3-32e^2+e)/24. See A090611
(25+3*sqrt(69))/2. See A230242
(25-10*sqrt(5))/2. See A229759
(251+66*sqrt(2))/233. See A157298
(269+11*sqrt(1086))/490. See A178247
(27+10*sqrt(2))/23. See A156571
(27/64)^(27/64) = (81/256)^(81/256). See A258504
(278307+179662*sqrt(2))/337^2. See A159576
(28+2*sqrt(210))/7. See A176457
(28+sqrt(2730))/56. See A177924
(280*(3 - sqrt(3)))/(840 - 280*sqrt(3) + 4*sqrt(5) - sqrt(10)). See A086306
(29+sqrt(145))/12. See A077451
(293619+186550*sqrt(2))/359^2. See A159846
(297+68*sqrt(2))/281. See A157349
(3 + (4/7)*(43/57)^(4/3) = 3 + 172*(43/57)^(1/3)/399). See A225359
(3 + sqrt(21))/2. See A090458
(3 divided by golden ratio = 3/phi = 6/(1 + sqrt(5))). See A134973
(3*Catalan*Pi)/4 - Pi^3/64 + (Pi^2*log(64))/64 - (105*zeta(3))/64. See A091477
(3*e)/2 - 3*e^2 + e^3. See A091133
(3*Gamma(1/3)^6)/(16*2^(2/3)*Pi^4). See A091671
(3*Pi)/8. See A093828
(3+2*sqrt(3))/2. See A176102
(3+2*sqrt(3))/3. See A176053
(3+2*sqrt(6))/5. See A177705
(3+sqrt(109))/10. See A188729
(3+sqrt(11))/2. See A176105
(3+sqrt(11))/3. See A176056
(3+sqrt(13))/6. See A176019
(3+sqrt(15))/2. See A176058
(3+sqrt(15))/3. See A176020
(3+sqrt(15))/6. See A176016
(3+sqrt(17))/2. See A178255
(3+sqrt(17))/4, which has periodic continued fractions [1,1,3,1,1,3,1,1,3,...] and [3/2, 3, 3/2, 3, 3/2,...]. See A188485
(3+sqrt(21))/3. See A190290
(3+sqrt(21))/4. See A190289
(3+sqrt(21))/6. See A176014
(3+sqrt(33))/4, which has periodic continued fractions [2,5,2,1,2,5,2,1,...] and [3/2, 1, 3/2, 1, ...]. See A189966
(3+sqrt(34))/5. See A188736
(3+sqrt(37))/7. See A176977
(3+sqrt(5))/10. See A229780
(3+sqrt(73))/8. See A188657
(3+sqrt(9+12x))/6, where x=sqrt(3). See A190262
(3+sqrt(9+4r))/2, where r=sqrt(3). See A190285
(3+x+sqrt(38+6x))/4, where x=sqrt(13). See A189964
(3-phi)/2, where phi is the golden ratio. See A187798
(3-phi)^2 where phi is the golden ratio. See A187426
(3/(4*Pi))^(1/3). See A087199
(3/2)*log(3/2). See A083680
(3/2)*Pi. See A197723
(3/4)! = Gamma(7/4). See A203130
(3/4)*sqrt(2). See A093577
(3/8)! = Gamma(11/8). See A203127
(32+sqrt(1297))/13. See A178566
(32/25515)*Pi^4. See A222073
(3267+1702*sqrt(2))/47^2. See A159752
(33+8*sqrt(2))/31. See A157647
(33+sqrt(2805))/66. See A177344
(339+26*sqrt(2))/337. See A159575
(34947+21922*sqrt(2))/127^2. See A159468
(35+sqrt(1295))/10. See A176444
(35+sqrt(1295))/7. See A176534
(35+sqrt(1365))/10. See A176437
(35+sqrt(1365))/14. See A176321
(361299+5950*sqrt(2))/601^2. See A160100
(363+130*sqrt(2))/313. See A160575
(363+38*sqrt(2))/359. See A159845
(387+182*sqrt(2))/17^2. See A157649
(4 + 3*log(3))/20. See A093064
(4 - 3*sqrt(3)/Pi)/6: ratio of the area of a circular segment with central angle 2*Pi/3 and the area of the corresponding circular half-disk. See A258147
(4 - Pi)/4. See A210958
(4 divided by golden ratio = 4/phi = 8/(1 + sqrt(5))). See A134974
(4*(18+12*sqrt(2)-10*sqrt(3)-7*sqrt(6))*EllipticK((2-sqrt(3))^2*(-sqrt(2)+sqrt(3))^2)^2)/Pi^2. See A091672
(4*Pi^2)/sqrt(35) = A212002/A010490. See A196737
(4*Pi^6*log(2) - 90*Pi^4*zeta(3) + 1350*Pi^2*zeta(5) - 5715*zeta(7))/1536. See A194657
(4*sqrt(2)*Pi^2)/gamma(1/4)^2. See A096428
(4*sqrt(3)-Pi)*Pi/12. See A133627
(4+17*sqrt(2)-6*sqrt(3)-7*Pi+21*log(1+sqrt(2))+42*log(2+sqrt(3)))/75. See A093066
(4+3*sqrt(2))/2. See A176218
(4+5*sqrt(2))/4. See A189959
(4+sqrt(17))/8. See A174930
(4+sqrt(37))/7. See A177036
(4+sqrt(65))/7. See A176976
(4+sqrt(7))/3. See A188945
(4-sqrt(7))/3. See A188944
(4/3)^(3/2). See A118273
(4/45)*Pi^3. See A248223
(4/7)*(43/57)^(4/3). See A225357
(4/9)^(4/9) = (8/27)^(8/27). See A194789
(4047+sqrt(16394397))/142. See A176713
(43/11)*(4*Pi^3/45)^(3/2). See A248224
(44+sqrt(2442))/88. See A177838
(443+42*sqrt(2))/439. See A159891
(45+3*sqrt(235))/10. See A176523
(4502+sqrt(29964677))/6961. See A177160
(450483+287918*sqrt(2))/439^2. See A159892
(451+30*sqrt(2))/449. See A159590
(473+168*sqrt(2))/409. See A160578
(4K/Pi)^2 where K is the Landau-Ramanujan constant. See A088539
(5 + 2*sqrt(5))/135. See A243908
(5 + 4*sqrt(5)*arcsch(2))/25. See A086465
(5 - Pi)/4. See A091651
(5+3*sqrt(3))/2. See A176325
(5+3*sqrt(5))/10. See A176015
(5+7*sqrt(5))/10. See A189961
(5+9*sqrt(5))/12. See A189963
(5+sqrt(21))/2. See A107905
(5+sqrt(221))/14. See A177841
(5+sqrt(25+4r))/2, where r=sqrt(5). See A190287
(5+sqrt(30))/2. See A176319
(5+sqrt(30))/5. See A176057
(5+sqrt(34))/3. See A188882
(5+sqrt(35))/2. See A176317
(5+sqrt(35))/5. See A176052
(5+sqrt(41))/4. See A188731
(5+sqrt(61))/6. See A188732
(5+sqrt(65))/10. See A171419
(5+sqrt(65))/4. See A171417
(5+sqrt(65))/8. See A177707
(5+sqrt(85))/10. See A177347
(5+sqrt(85))/6, which has periodic continued fractions [2,2,1,2,2,1,...] and [5/2, 1, 5/2, 1, ...]. See A189968
(5-sqrt(5))/2. See A094874
(5/18)Pi. Decimal expansion of, asymptotically, the probability that the evolution of a random graph ever simultaneously has two complex components. See A179044
(5/48)! = Gamma(53/48). See A203082
(5/6)! = Gamma(11/6). See A203131
(5/8)! = Gamma(13/8). See A203128
(507363+329222*sqrt(2))/449^2. See A159591
(51+14*sqrt(2))/47. See A159751
(520659+314170*sqrt(2))/521^2. See A160585
(52323+26522*sqrt(2))/191^2. See A161489
(537+92*sqrt(2))/521. See A160584
(56211+34510*sqrt(2))/167^2. See A159779
(579+34*sqrt(2))/577. See A159627
(587+102*sqrt(2))/569. See A160091
(5907+1802*sqrt(2))/73^2. See A160043
(591603+85478*sqrt(2))/761^2. See A160202
(5sqrt(3)+sqrt(15))/(6Pi). See A165953
(6 divided by golden ratio = 6/phi = 12/(1 + sqrt(5))). See A134976
(6*sqrt(3)+12*log(2+sqrt(3))-Pi)/48. See A135691
(6+2*sqrt(10))/3. See A176219
(6+4*sqrt(3))/3. See A176214
(6+sqrt(39))/2. See A176401
(6+sqrt(42))/2. See A176396
(6+sqrt(42))/3. See A176216
(6+sqrt(42))/4. See A176107
(6/Pi^2) Sum_{p prime} 1/(p(p+1)), a Meissel-Mertens constant related to the asymptotic density of certain sequences of integers. See A271971
(6/Pi^2)*Sum_{n>=1} 1/prime(n)^2. See A222056
(601+276*sqrt(2))/457. See A160581
(617139+371510*sqrt(2))/569^2. See A160092
(627+238*sqrt(2))/23^2. See A157472
(63+3*sqrt(469))/14. See A176520
(633+100*sqrt(2))/617. See A160177
(64/10395)*Pi^5. See A222075
(64/27)^(256/81) = (256/81)^(64/27). See A258503
(649+36*sqrt(2))/647. See A159642
(684125+sqrt(635918528029))/1033802. See A177270
(7+2*sqrt(14))/2. See A176436
(7+2*sqrt(2))/(7-2*sqrt(2)). See A157260
(7+3*sqrt(7))/2. See A176434
(7+3*sqrt(7))/7. See A176054
(7+5*sqrt(29))/26. See A178593
(7+sqrt(105))/4, which has periodic continued fractions [4,3,4,1,4,3,4,1...] and [7/2, 1, 7/2, 1, ...]. See A189967
(7+sqrt(13))/6. See A188943
(7+sqrt(133))/4, which has periodic continued fractions [3,11,3,1,3,11,3,1,...] and [7/3, 1, 7/3, 1, ...]. See A189969
(7+sqrt(145))/16. See A176908
(7+sqrt(229))/18. See A178236
(7+sqrt(33))/4. See A188939
(7+sqrt(53))/2. See A176439
(7+sqrt(65))/4. See A188734
(7+sqrt(77))/14. See A176017
(7+sqrt(85))/6. See A188737
(7+sqrt(93))/6. See A177003
(7-sqrt(13))/6. See A188942
(7-sqrt(33))/4. See A188938
(7/8)! = Gamma(15/8). See A203132
(7/83)^(2/9). See A210624
(70*exp(Pi*sqrt(163)))^2. See A161771
(731+54*sqrt(2))/727. See A159894
(755667+461578*sqrt(2))/617^2. See A160178
(7^(e - 1/e) - 9)*Pi^2, also known as Jenny's constant. See A182369
(8 - 4*sqrt(2) - log(2))/(-1 + 2*sqrt(2)). See A093767
(82611+44030*sqrt(2))/233^2. See A157299
(83+18*sqrt(2))/79. See A159759
(843+418*sqrt(2))/601. See A160099
(843+58*sqrt(2))/839. See A159897
(85+sqrt(9029))/82. See A177972
(855171+556990*sqrt(2))/577^2. See A159628
(873+232*sqrt(2))/809. See A160204
(883+42*sqrt(2))/881. See A159691
(89+36*sqrt(2))/73. See A160042
(8979+2990*sqrt(2))/89^2. See A160057
(9*sqrt(3))/2 + 5*Pi. See A118308
(9+2*sqrt(39))/15. See A177037
(9+27*sqrt(2))/17. See A189960
(9+3*sqrt(10))/2. See A176517
(9+3*sqrt(11))/2. See A176515
(9+4*sqrt(2))/7. See A156649
(9+sqrt(145))/16. See A176907
(9+sqrt(145))/8. See A188733
(9+sqrt(165))/14. See A178591
(9+sqrt(17))/8. See A189038
(9+sqrt(221))/14. See A177156
(9+sqrt(65))/4. See A188941
(9+sqrt(85))/2. See A176522
(9+sqrt(87))/2. See A176519
(9+sqrt(87))/3. See A176402
(9+sqrt(93))/2. See A176516
(9+sqrt(93))/6. See A176108
(9+sqrt(97))/4. See A188735
(9-sqrt(17))/8. See A189037
(9-sqrt(65))/4. See A188940
(9/2)*Pi. See A210583
(9/4)^(27/8) = (27/8)^(9/4). See A194556
(907+210*sqrt(2))/857. See A160207
(91443+58282*sqrt(2))/199^2. See A159550
(9280+3*sqrt(13493990))/14165. See A177034
(933747+224782*sqrt(2))/937^2. See A160211
(969+124*sqrt(2))/953. See A160213
(969+44*sqrt(2))/967. See A159702
(989043+524338*sqrt(2))/809^2. See A160205
(99+14*sqrt(2))/97. See A157470
(A016651 - A016636) / A016635. See A234518
(abs(log(cosine of 1 degree)))^(-1). See A111718
(abs(log(sine of 1 degree)))^(-1). See A111512
(abs(log(sine of 1 radian)))^(-1). See A117031
(abs(log(tan(1 degree))))^(-1). See A111768
(abs(log_10(cosine of 1 degree)))^(-1). See A111720
(abs(log_10(sine of 1 degree))). See A111513
(abs(log_10(sine of 1 degree)))^(-1). See A111514
(conjectured) limit c(n+1)/c(n), where c = A078140. See A281112
(conjectured) limit of ratio of successive terms of A052109. See A052131
(cos 1)^(-2)=(sec(1))^2. See A117041
(cos 1)^(-3)=(sec(1))^3. See A117042
(cos 1)^(-4)=(sec(1))^4. See A117043
(cos 1)^(-5)=(sec(1))^5. See A117044
(cos 1)^(1/2). See A117037
(cos 1)^(1/3). See A117038
(cos 1)^(1/4). See A117039
(cos 1)^(1/5). See A117040
(cos 1)^2. See A117033
(cos 1)^3. See A117034
(cos 1)^4. See A117035
(cos 1)^5. See A117036
(cosecant of 1 degree)^(1/2). See A110943
(cosecant of 1 degree)^(1/3). See A110944
(cosecant of 1 degree)^(1/4). See A110945
(cosecant of 1 degree)^(1/5). See A110946
(cosecant of 1 degree)^2. See A110938
(cosecant of 1 degree)^3. See A110940
(cosecant of 1 degree)^4. See A110941
(cosecant of 1 degree)^5. See A110942
(cosine of 1 degree)^4. See A111613
(cosine of 1 degree)^5. See A111623
(cotangent of 1 degree)^(1/2). See A113812
(cotangent of 1 degree)^(1/3). See A113813
(cotangent of 1 degree)^(1/4). See A113814
(cotangent of 1 degree)^(1/5). See A113815
(cotangent of 1 degree)^2. See A113794
(cotangent of 1 degree)^3. See A113809
(cotangent of 1 degree)^4. See A113810
(cotangent of 1 degree)^5. See A113811
(diagonal)/(shortest side) of 1st electrum rectangle. See A188618
(diagonal)/(shortest side) of 2nd electrum rectangle. See A188619
(diagonal)/(shortest side) of a golden rectangle. See A188593
(e + 1)/3. See A160388
(e + Pi + phi)/2. See A133056
(e + Pi + phi)/3. See A133057
(E(|x|^3))^(1/3), with x being a normally distributed random variable. See A289090
(E(|x|^5))^(1/5), with x being a normally distributed random variable. See A289091
(e*gamma*Pi*phi)/4, where gamma is the Euler-Mascheroni constant and phi is the golden ratio. See A153505
(e*Pi*Phi)^(1/2). See A133065
(e*Pi*Phi)^(1/3). See A133066
(e*Pi*phi)^2. See A131566
(e+gamma+Pi+phi)/4, where gamma is the Euler-Mascheroni constant and phi is the golden ratio. See A153506
(e+sqrt(-4+e^2))/2. See A189040
(e+sqrt(16+e^2))/4. See A188727
(e+sqrt(4+e^2))/2. See A188720
(e-1)*(e^(1/e)-1) - int(x^(1/x)-1, x=1..e). See A175998
(e-1)*(e^(1/e)-1). See A175996
(e-1)/(e+1). See A160327
(e-sqrt(-4+e^2))/2. See A189042
(e/2)^2. See A257775
(e/3)^3. See A257776
(e/phi)*Pi, where phi is the golden ratio (A001622). See A256110
(e/pi)^(1/10). See A094141
(e/pi)^(1/11). See A094145
(e/pi)^(1/12). See A094146
(e/pi)^(1/2). See A094127
(e/pi)^(1/3). See A094129
(e/pi)^(1/4). See A094130
(e/pi)^(1/5). See A094134
(e/pi)^(1/6). See A094131
(e/Pi)^(1/7). See A094132
(e/pi)^(1/8). See A094135
(e/pi)^(1/9). See A094139
(e/pi)^10. See A094122
(e/pi)^11. See A094126
(e/pi)^12. See A094123
(e/Pi)^2. See A092034
(e/pi)^3. See A092160
(e/Pi)^4. See A092161
(e/Pi)^5. See A092159
(e/pi)^6. See A092162
(e/pi)^7. See A094118
(e/pi)^8. See A094119
(e/pi)^9. See A094121
(exp(Pi)-log(3))/log(2). See A152095
(e^1/4)/sqrt(2). See A181446
(e^e)^(e^e), where e=exp(1). See A202949
(e^e)^e. See A073228
(e^gamma - 1)/e^gamma. See A227242
(e^Pi)*(Pi^e). See A114594
(finite) value of the sum_ { k >=1, k has no "0" digit in base 100 } 1/k. See A194183
(finite) value of the sum_ { k >=1, k has no even digit in base 10 } 1/k. See A194181
(finite) value of the sum_ { k >=1, k has no odd digit in base 10 } 1/k. See A194182
(finite) value of the sum_{ k >= 1, k has no digit equal to 1 in base 10 } 1/k. See A082830
(finite) value of the sum_{ k >= 1, k has no digit equal to 2 in base 10 } 1/k. See A082831
(finite) value of the sum_{ k >= 1, k has no digit equal to 3 in base 10 } 1/k. See A082832
(finite) value of the sum_{ k >= 1, k has no digit equal to 4 in base 10 } 1/k. See A082833
(finite) value of the sum_{ k >= 1, k has no digit equal to 5 in base 10 } 1/k. See A082834
(finite) value of the sum_{ k >= 1, k has no digit equal to 6 in base 10 } 1/k. See A082835
(finite) value of the sum_{ k >= 1, k has no digit equal to 7 in base 10 } 1/k. See A082836
(finite) value of the sum_{ k >= 1, k has no digit equal to 8 in base 10 } 1/k. See A082837
(finite) value of the sum_{ k >= 1, k has no digit equal to 9 in base 10 } 1/k. See A082838
(finite) value of the sum_{ k >= 1, k has only a single zero digit in base 2 } 1/k. See A160502
(gamma + log 16)/Pi. See A212298
(Gamma(1/6)*Gamma(1/3))/(3*sqrt(Pi)). See A118292
(Gamma(3/4))^2 / Pi^(3/2) . See A175575
(Gamma(delta)/delta)^2 where delta is the Feigenbaum bifurcation velocit constant (A006890). See A102819
(gamma+sqrt(4+gamma^2))/2, where gamma is the Euler-Mascheroni constant. See A224578
(Glaisher^12/(2*Pi*e^EulerGamma))^(Pi^2/6). See A115522
(Glaisher^12/(2^(4/3) * Pi * e^EulerGamma))^(Pi^2/8). See A115521
(golden ratio divided by 3 = phi/3 = (1 + sqrt(5))/6). See A134943
(golden ratio divided by 6 = phi/6 = (1 + sqrt(5))/12). See A134946
(golden ratio)^E. See A212712
(log 2)^(log 2). See A220781
(log(1+sqrt(2))+Pi/2)/(2*sqrt(2)) = Sum_{k>=0} (-1)^k/(4*k+1). See A181048
(log(2)*zeta(2)+zeta'(2)) / 2. See A210593
(log(3))^2. See A175478
(log(640320^3+744)/Pi)^2. See A154738
(log_10 Pi) / Pi. See A099736
(negated) constant in the expansion of the prime zeta function about s = 1. See A143524
(negated) value of q at which the q-Pochhammer symbol reaches a maximum along [ -1, 1]. See A143441
(negative of) Kinkelin constant. See A084448
(negative of) real solution -1<x<1 to zeta(x)=sin(x). See A069815
(negative of) root of exp(x)+sin(x)=0. See A069997
(n^2+n)/2 (triangular numbers) contains no pair of consecutive equal digits. See A050759
(phi-1)_inf = (1/phi)_inf, where (q)_inf is the q-Pochhammer symbol, phi = (1+sqrt(5))/2 is the golden ratio. See A276987
(Pi + e)^(-1/3). See A094245
(Pi + e)^Pi. See A094001
(Pi - 1)/2. See A096444
(Pi - 3)*Pi^2/3. See A114602
(Pi!)! = gamma(gamma(Pi+1)+1). See A111197
(pi)^2-e^2. See A096255
(pi)^3-e^3. See A096388
(Pi*e)(-1/4). See A096413
(Pi*e)^(-1/3). See A096412
(Pi*e)^(-2). See A096409
(Pi*e)^(-3). See A096410
(Pi*e)^(1/3). See A093443
(Pi*e)^(1/4). See A093444
(Pi*e)^2. See A092036
(Pi*e)^3. See A092138
(Pi*e)^4. See A092140
(Pi*e)^5. See A092141
(Pi*sqrt(163))^e. See A102645
(Pi+e)/2 - (Pi*e)^(1/2). See A074921
(Pi+e)/2 - decimal expansion of (Pi*e)^(1/2). See A074917
(Pi+e)/2 - decimal expansion of (Pi*e)^(1/2). See A074917
(Pi+e)/2. See A074916
(pi+e)^(1/2). See A094239
(pi+e)^(1/3). See A094240
(pi+e)^2. See A094237
(pi+e)^3. See A094238
(pi+e)^e. See A094246
(Pi+sqrt(-4+Pi^2))/2. See A189039
(Pi+sqrt(4+Pi^2))/2. See A188722
(Pi-1)*(2*Pi-1)/12. See A223709
(Pi-2)*(Pi-1)/3. See A223710
(Pi-3)*(2*Pi-3)/4. See A217909
(Pi-atan(e))/(2*Pi). See A257896
(pi-e)^(1/2). See A096434
(pi-e)^(1/3). See A096435
(Pi-sqrt(-4+Pi^2))/2. See A189044
(Pi/2 - log(1+sqrt(2)))/(2*sqrt(2)) = Sum_{k>=0} (-1)^k/(4k+3). See A181049
(Pi/2)*tanh(Pi/2). See A228048
(Pi/2)^(1/4)/Gamma(3/4). See A248557
(Pi/3*sqrt(3))^(1/3), the sphericity of the octahedron. See A273635
(Pi/4)^N*(N^N/N!)^2 for N = 3. See A261813
(Pi/6)^(1/3), the sphericity of the cube. See A273634
(Pi/6*sqrt(3))^(1/3), the sphericity of the tetrahedron. See A273633
(Pi/e)(1/3). See A096415
(Pi/e)^(1/2). See A096414
(Pi/e)^(1/4). See A096416
(Pi/e)^2. See A092035
(Pi/e)^3. See A092156
(Pi/e)^4. See A092157
(Pi/e)^5. See A092158
(pi^2)/(2+2*pi). See A197684
(Pi^2)/(2+4*Pi). See A197692
(Pi^2)/(2+6*Pi). See A197697
(pi^2)/(2+pi). See A197724
(pi^2)/(4+2*pi). See A197685
(Pi^2)/(4+4*Pi). See A197693
(pi^2)/(4+6*pi). See A197698
(pi^2)/(4+pi). See A197725
(Pi^2)/2 -4. See A102754
(Pi^2)/2. See A102753
(Pi^2-9)/12. See A126561
(Pi^2-e^2)^(1/2). See A096437
(pi^2-e^2)^(1/3). See A096438
(Pi^2/15)^(1/3). See A249103
(Pi^3)/24. See A152584
(pi^3-e^3)^(1/2). See A096439
(pi^3-e^3)^(1/3). See A096440
(Pi^4 + Pi^5)^(1/6). See A060302
(Pi^Pi)^Pi. See A073235
(PolyGamma(1,(1+sqrt(5))/4)-PolyGamma(1,(3+sqrt(5))/4))/2. See A091659
(psi(i)-psi(-i))/2/i-3/2 where psi is the digamma function. See A100554
(real) period of the elliptic function sn(x,1/2). See A242670
(secant of 1 degree)^(1/2). See A112253
(secant of 1 degree)^(1/3). See A112254
(secant of 1 degree)^(1/4). See A112255
(secant of 1 degree)^(1/5). See A112256
(secant of 1 degree)^2. See A112238
(secant of 1 degree)^3. See A112247
(secant of 1 degree)^4. See A112246
(secant of 1 degree)^5. See A112252
(sine of 1 radian)^(1/2). See A117017
(sine of 1 radian)^(1/3). See A117018
(sine of 1 radian)^(1/4). See A117019
(sine of 1 radian)^(1/5). See A117020
(sine of 1 radian)^2. See A117013
(sine of 1 radian)^3. See A117014
(sine of 1 radian)^4. See A117015
(sine of 1 radian)^5. See A117016
(sqrt(13) - 1)/2. See A223139
(sqrt(13)-3)/2. See A085550
(sqrt(2)+log(1+sqrt(2)))/3, the integral over the square [0,1]x[0,1] of sqrt(x^2+y^2) dx dy. See A244921
(sqrt(2)-1)/2. See A268683
(sqrt(2+e^e)/e)^e. See A187079
(sqrt(29) + 1)/2. See A223140
(sqrt(29) - 1)/2. See A223141
(sqrt(29)-5)/2. See A085551
(sqrt(3)+sqrt(7))/2. See A188922
(sqrt(3)-1)/2. See A152422
(sqrt(3)-1)^(sqrt(2)-1). See A277064
(sqrt(33) + 1) / 2. See A235162
(sqrt(33) - 1) / 2. See A236290
(sqrt(35)-5)/10. See A161321
(sqrt(e*e+4*Pi)-e)/2. See A260800
(sqrt(Pi)/(2^(1/4)*Gamma(5/8)*Gamma(7/8)))^2. See A278144
(Sqrt[20467] - Sqrt[19578] + Sqrt[10177] - Sqrt[9553])/2. See A087478
(tan 1 degree)^(1/2). See A111760
(tan 1 degree)^(1/3). See A111761
(tan 1 degree)^(1/4). See A111762
(tan 1 degree)^(1/5). See A111763
(tan 1 degree)^4. See A111722
(tan 1 degree)^5. See A111754
(W(e-1)/(e-1))^(1/(1-e)), where W(z) denotes the Lambert W function and e = 2.718281828... See A141606
(x+sqrt(2+4x))/2, where x=sqrt(2). See A190258
-(8*(EulerGamma - log(2)))/3. See A096429
-(Gamma(1/4)*zeta(1/2))/(8*Pi^(1/4)). See A114720
-(gamma-log(2))/2. See A239097
-(Pi*log((sqrt(2*Pi)*Gamma(3/4))/Gamma(1/4)))/2. See A115252
-1/(e^2 Ei(-1)), an increasing rooted tree enumeration constant associated with the Euler-Gompertz constant, where Ei is the exponential integral. See A272055
-1/4 + log(2)/2. See A102047
-1/8 + 4/Pi^2. See A093588
-109/121 - 82/(121*sqrt(3)) + (2*sqrt(-35139 + 28634*sqrt(3)))/121 - Pi/3 + arccos((-1 + sqrt(3))/2). See A093822
-2 cos(5 Pi/7). See A255249
-2*cos((2*Pi)/9) + 2*sqrt(3)*sin((2*Pi)/9). See A133749
-2B = sum(r in Z, 1/(r*(1-r))), where Z is the set of zeros of the Riemann zeta-function which lie in the strip 0 <= Re(z) <= 1. See A195423
-3(1 - Pi) See A173625
-4/Pi + Pi/2. See A180310
-41/16 + (3*sqrt(3))/2. See A086269
-6*int_{x=0..Pi/3} log|2*sin(x)| dx. See A091518
-64/(9 Pi) + Pi. See A180311
-99*(zeta(-5) + zeta(-9)) - 1. See A020806
-B =(1/2)*sum(r in Z, 1/r/(1-r)) where Z is the set of zeros of the Riemann zeta-function which lie in the strip 0 <=Re(z)<=1. See A074760
-B(12) = 691/2730, 13th Bernoulli number without sign. See A234255
-C, where C = -0.2959050055752... is the real solution < 0 to zeta(x) = x. See A069857
-cos(10^50). See A085677
-cos(2^19*r) where r ~ 0.739085 is the root of cos x = x (A003957). See A100547
-cos(e). See A085660
-cos(Pi*e/2). See A211883
-dilog(phi) = -polylog(2, 1-phi) with phi = (1 + sqrt(5))/2. See A242600
-Ei(-1), negated exponential integral at -1. See A099285
-exp(1)*Ei(-1), also called Gompertz's constant, or the Euler-Gompertz constant. See A073003
-Gamma(1). See A261509
-int(x*cos(x)/(1+x^2),x=0..infinity). See A229174
-Integral {x=1..2} log gamma(x) dx. See A110544
-Integral_{x=0..1} (Sqrt(x)/Log(1-x)) dx. See A094691
-Integral_{x=0..1} log(InverseErf(x)) dx. See A114864
-log(2-2*cos(1))/2. See A121225
-log(gamma), where gamma is Euler's constant A001620. See A002389
-log(log(2)). See A074785
-log(sine of 1 degree)). See A111511
-log_Pi(gamma), where gamma is the Euler-Mascheroni constant. See A182500
-Pi/4 + (3*log(2))/2. See A100046
-PolyGamma(2,(1+sqrt(3))/2)/2. See A091660
-psi(1/2). See A020759
-psi(1/3). See A047787
-sin(10^50). See A085676
-sin(Pi*e/2). See A211884
-sm(-1), where sm(t) is the Dixonian elliptic function sm(t). See A261745
-sqrt(2)*arctan(sqrt(2)/5)+1/4*Pi*sqrt(2). See A266814
-sqrt(7) + sqrt(11), Andrica's Maximum A_n. See A218012
-Sum( n>=2, (-1)^n*log(1 - 1/(n*(n-1))) ). See A217706
-tan(tan(tan(1))). See A085666
-x where x is the real root of f(x) = 1 + 3x + 5x^2 + 5x^3 + 7x^4 + 11x^5 + 13x^6 + 17x^7 + 19x^8 + 29x^9 + 31x^10 + 41x^11 + 43x^12 + 59x^13 + 61x^14 + 71x^15 + 73x^16 + ... where for n>0 the coefficient of x^n is the n-th twin prime. See A104225
-x where x<0 satisfies 2*x^2+3x=2*sin(x). See A198609
-x where x<0 satisfies 2*x^2+3x=sin(x). See A198608
-x where x^2/2! + x^3/3! + x^5/5! + x^7/7! + x^11/11! + x^13/13! + ... = 0. See A084257
-x, the largest negative root of the equation Fibonacci(x) = 0. See A089260
-x, the real root of the equation 0 = 1 + Sum_{k>=1} prime(k) x^k. The inverse of Backhouse's constant (A072508). See A088751
-x, the real root of the power series with semiprime coefficients. See A114041
-x, where x is the negative solution to the equation 2^x = x^2. See A073084
-x, where x is the real root of f(x) = 1 + (twin_prime(n))x^n. See A104225
-x, where x is the unique nonzero real solution to Sum_{p prime} x^p = 0. See A078756
-x, where x<0 satisfies 2*x^2+4x=sin(x). See A198611
-x_1 such that the Riemann function zeta(x) has at real x_1<0 its first local extremum. See A271855
-zeta(0). See A261508
-zeta'(-1/2), negated derivative of the Riemann zeta function at -1/2. See A271854
-zeta'(0). See A075700
-zeta'(1/2). See A114875
-zeta'(2) (the first derivative of the zeta function at 2). See A073002
-zeta'(3) (the first derivative of the zeta function at 3). See A244115
-zeta'(4). See A261506
-zeta(-1/2). See A211113
-zeta(-3/2), negated value of the Riemann zeta function at -3/2. See A271853
-zeta(1/2)/sqrt(2*Pi). See A134469

### Start of section 1

.121121112...^2, cf. A042974. See A042976
0.235711317191329213731434743595... See A228355
0.3 * sqrt(15). See A140248
0th Gram point. See A114857
0th Stieltjes constant. See A001620
1 + (least possible ratio of the side length of one inscribed square to the side length of another inscribed square in the same non-obtuse triangle). See A179587
1 + 1/(1*3) + 1/(1*3*5) + 1/(1*3*5*7) + ... See A060196
1 + 22/60 + 7/60^2 + 42/60^3 + 33/60^4 + 4/60^5 + 40/60^6, Fibonacci's solution to x^3 + 2x^2 + 10x = 20. See A244467
1 + 2sqrt(2). See A086178
1 + A117871. See A129635
1 + log(gamma), where gamma is Euler's constant A001620. See A213440
1 + phi = phi^2 = (3 + sqrt(5))/2. See A104457
1 + Product_{n>0} (1-1/(4*n+2)^2). See A179587
1 + sqrt(3). See A090388
1 + sqrt(5). See A134945
1 + sqrt(6). See A086180
1 - (Pi/4). See A210958
1 - 1/(1*2) + 1/(1*2*2) - 1/(1*2*2*3) + ... See A229020
1 - 1/e. See A068996
1 - 1/e^(1/2). See A290506
1 - 1/e^2. See A219863
1 - 1/phi. See A132338
1 - 1/Pi. See A188340
1 - 1/sqrt(10). See A054042
1 - 1/sqrt(2). See A268682
1 - 2^(-1/3). See A261883
1 - 6/Pi^2. See A229099
1 - A175999. See A176000
1 - gamma, where gamma is Euler's constant (or the Euler-Mascheroni constant). See A153810
1 - log(2). See A244009
1 - Pi/6. See A228715
1 / (1 - gamma - log(2^0.5)) - 12, where gamma is the Euler-Mascheroni constant. See A131915
1 / (1 - gamma - log(3/2)) - 54, where gamma is the Euler-Mascheroni constant. See A131917
1 / (e * log(10)), where e = A001113, log(10) = A002392. See A220261
1 / M(1,sqrt(2)) (Gauss's constant). See A014549
1 minus the Champernowne constant, with offset 0. See A031310
1 minus the Copeland-Erdos constant. See A154730
1+2^(1/2)+3^(1/3)+4^(1/4)+5^(1/5)+6^(1/6)+7^(1/7). See A250091
1+sqrt(1+sqrt(2)). See A190283
1+sqrt(11)*(sqrt(29)+sqrt(5))/24. See A077453
1-(3*sqrt(3))/(4*Pi). See A102519
1-(9*sqrt(3))/(8*Pi). See A102520
1-9/(4*Pi)+sqrt(3)/(2*Pi), an extreme value constant. See A243447
1-delta_0, where delta_0 is the Hall-Montgomery constant (A143301). See A246849
1-gamma-gamma(1), a constant related to the asymptotic expansion of j(n), the counting function of "jagged" numbers, where gamma is Euler-Mascheroni constant and gamma(1) the first Stieltjes constant. See A242610
1-log_10(9). See A104140
1. See A000007
1/((e*Pi*phi)^2). See A131567
1/(1*2) - 1/(2*3) + 1/(3*5) - 1/(4*7) + 1/(5*11) - ... -(-1)^k/(k*prime(k)) - ... See A278389
1/(1+1/(1+2/(1+3/(1+4/(1+5/(1+...)))))). See A108088
1/(1+LambertW(1)). See A115287
1/(1+sqrt(e)), a constant appearing in the computation of a limiting probability concerning the number of cycles of a given length in a random permutation. See A246848
1/(1-cos(1)). See A206533
1/(1-Gamma). See A091556
1/(1-sin(1)). See A206530
1/(2 cos(2 Pi/7)). See A255240
1/(2 log 2). See A133362
1/(2 tan(1/2)). See A121224
1/(2*(Pi-2)), the upper bound of the 3-dimensional simultaneous Diophantine approximation constant. See A244335
1/(2*K^2) = prod_(p prime congruent to 3 modulo 4) (1 - 1/p^2), where K is the Landau-Ramanujan constant. See A243379
1/(2*Pi). See A086201
1/(2*Pi*e). See A171819
1/(2*sqrt(3)) - Pi/36 + log(2 + sqrt(3))/3. See A097047
1/(2*sqrt(Pi)). See A087198
1/(4*K), a constant related to the asymptotic evaluation of the number of positive integers all of whose prime factors are congruent to 1 modulo 4, where K is the Landau-Ramanujan constant. See A243375
1/(70*exp(Pi*sqrt(163)))^2. See A162916
1/(8*sqrt(3)). See A222067
1/(e+1). See A201776
1/(e-1) = Sum(k >= 1, exp(-k)). See A073333
1/(e-2) See A194807
1/(eta*P'(eta)), a constant related to the asymptotic evaluation of the number of prime multiplicative compositions, where eta is A243350, the unique solution of P(x)=1, P being the prime zeta P function (P(x) = sum_(p prime) 1/p^x). See A243584
1/(exp(2*Pi/sqrt(5))*(sqrt(5)/(1+(5^(3/4)*(phi-1)^(5/2)-1)^(1/5))-phi)). See A091900
1/(e^(1/2)-1). See A113011
1/(g(1)+g(2)-g(4)-g(5)), where g(k) = sum(1/(6*m+k)^2,m=0..infinity). See A086723
1/(g(1)-g(2)+g(4)-g(5)), where g(k) = sum(1/(6*m+k)^2,m=0..infinity). See A086725
1/(gamma^3), where gamma is the Euler-Mascheroni constant. See A182498
1/(gamma^Pi), where gamma is the Euler-Mascheroni constant. See A182496
1/(imaginary part of (15+2*I)^(1/2))^2. See A166126
1/(Pi + 1). See A201774
1/(Pi - 1). See A201775
1/(Pi*e). See A096408
1/(pi+e). See A094241
1/(pi+e)^2. See A094242
1/(pi+e)^3. See A094243
1/(sqrt(2)*G), where G is Gauss's constant A014549. See A096427
1/(theta*P'(theta)), a constant appearing in the asymptotic evaluation of the coefficients q_n in 1/(1+P(x)), where P(x) is the generating function of the primes and theta the unique zero of P(x) in [-3/4, 0]. See A247818
1/10 * integral_0^infinity x^4/(cosh(pi x)) dx. See A021068
1/101. See A021105
1/102. See A021106
1/1024. See A069181
1/103. See A021107
1/104. See A021108
1/105. See A021109
1/106. See A021110
1/107. See A021111
1/108. See A021112
1/1089. See A113657
1/109. See A021113
1/10^(n^2+n) + 1/10^(n^2) + 1/10^(5*n) + 1/10^(2*n) gives a 0 for these integers. See A158942
1/11 + 1/1221 + 1/123321 + ... + 1/123456789987654321 + See A244861
1/11. See A010680
1/111. See A021115
1/112. See A021116
1/113. See A021117
1/114. See A021118
1/115. See A021119
1/116. See A021120
1/117. See A021121
1/118. See A021122
1/119. See A021123
1/12. See A021016
1/121. See A021125
1/122. See A021126
1/123. See A021127
1/124. See A021128
1/126. See A021130
1/127. See A021131
1/128. See A021132
1/129. See A021133
1/13. See A021017
1/131. See A021135
1/132. See A021136
1/133. See A021137
1/134. See A021138
1/135. See A021139
1/136. See A021140
1/137. See A021141
1/138. See A021142
1/139. See A021143
1/14. See A021018
1/141. See A021145
1/142. See A021146
1/143. See A021147
1/144. See A021148
1/145. See A021149
1/146. See A021150
1/147. See A021151
1/148. See A021152
1/149. See A021153
1/15. See A021019
1/151. See A021155
1/152. See A021156
1/153. See A021157
1/154. See A021158
1/155. See A021159
1/156. See A021160
1/157. See A021161
1/158. See A021162
1/159. See A021163
1/16. See A021020
1/161. See A021165
1/162. See A021166
1/163. See A021167
1/164. See A021168
1/165. See A021169
1/166. See A021170
1/167. See A021171
1/168. See A021172
1/169. See A021173
1/17. See A007450
1/171. See A021175
1/172. See A021176
1/173. See A021177
1/174. See A021178
1/175. See A021179
1/176. See A021180
1/177. See A021181
1/178. See A021182
1/179. See A021183
1/18. See A021022
1/181. See A021185
1/182. See A021186
1/183. See A021187
1/184. See A021188
1/185. See A021189
1/186. See A021190
1/187. See A021191
1/188. See A021192
1/189. See A021193
1/19. See A021023
1/191. See A021195
1/192. See A021196
1/193. See A021197
1/194. See A021198
1/195. See A021199
1/196. See A021200
1/197. See A021201
1/199. See A021203
1/2 * integral_0^infinity 1/cosh(Pi*x) dx. See A020773
1/2 + 2/sqrt(3) + 2/sqrt(5). See A214533
1/2 - Pi/8. See A239120
1/2 - Sum_{k>=1} 1/2^prime(k). See A275306
1/2+2/sqrt(13), a constant related to the asymptotic evaluation of the number of self-avoiding rook paths joining opposite corners on a 3 X n chessboard. See A244088
1/2+G/Pi, the highest limiting crest of a square wave Fourier series, where G is the Gibbs-Wilbraham constant. See A243267
1/2-G/Pi, the lowest limiting trough of a square wave Fourier series, where G is the Gibbs-Wilbraham constant. [negated] See A243268
1/2. See A020761
1/201. See A021205
1/202. See A021206
1/203. See A021207
1/204. See A021208
1/205. See A021209
1/206. See A021210
1/207. See A021211
1/208. See A021212
1/209. See A021213
1/21. See A021025
1/211. See A021215
1/212. See A021216
1/213. See A021217
1/214. See A021218
1/215. See A021219
1/216. See A021220
1/217. See A021221
1/218. See A021222
1/219. See A021223
1/22. See A021026
1/221. See A021225
1/222. See A021226
1/223. See A021227
1/224. See A021228
1/226. See A021230
1/227. See A021231
1/228. See A021232
1/229. See A021233
1/23. See A021027
1/231. See A021235
1/232. See A021236
1/233. See A021237
1/234. See A021238
1/235. See A021239
1/236. See A021240
1/237. See A021241
1/238. See A021242
1/239. See A021243
1/24. See A021028
1/241. See A021245
1/242. See A021246
1/243. See A021247
1/244. See A021248
1/245. See A021249
1/246. See A021250
1/247. See A021251
1/248. See A021252
1/249. See A021253
1/251. See A021255
1/252. See A021256
1/253. See A021257
1/254. See A021258
1/255. See A021259
1/256. See A021260
1/257. See A021261
1/258. See A021262
1/259. See A021263
1/26. See A021030
1/261. See A021265
1/262. See A021266
1/263. See A021267
1/265. See A021269
1/266. See A021270
1/267. See A021271
1/268. See A021272
1/269. See A021273
1/27. See A021031
1/271. See A021275
1/272. See A021276
1/273. See A021277
1/273.16, the fraction of the triple point temperature of water corresponding to 1 K (kelvin). See A256460
1/274. See A021278
1/276. See A021280
1/277. See A021281
1/278. See A021282
1/279. See A021283
1/28. See A021032
1/281. See A021285
1/282. See A021286
1/283. See A021287
1/284. See A021288
1/285. See A021289
1/286. See A021290
1/287. See A021291
1/288. See A021292
1/289. See A021293
1/29. See A021033
1/291. See A021295
1/292. See A021296
1/293. See A021297
1/294. See A021298
1/295. See A021299
1/296. See A021300
1/297. See A021301
1/298. See A021302
1/299. See A021303
1/2^20. See A259982
1/3*(log(2) + Pi/sqrt(3)). See A113476
1/301. See A021305
1/302. See A021306
1/303. See A021307
1/304. See A021308
1/305. See A021309
1/306. See A021310
1/307. See A021311
1/308. See A021312
1/309. See A021313
1/31. See A021035
1/311. See A021315
1/312. See A021316
1/313. See A021317
1/314. See A021318
1/315. See A021319
1/316. See A021320
1/317. See A021321
1/318. See A021322
1/319. See A021323
1/32. See A021036
1/321. See A021325
1/322. See A021326
1/323. See A021327
1/324. See A021328
1/325. See A021329
1/326. See A021330
1/327. See A021331
1/328. See A021332
1/329. See A021333
1/33 = .030303030... See A010674
1/331. See A021335
1/332. See A021336
1/333. See A021337
1/334. See A021338
1/335. See A021339
1/336. See A021340
1/337. See A021341
1/338. See A021342
1/339. See A021343
1/34. See A021038
1/341. See A021345
1/342. See A021346
1/343. See A021347
1/344. See A021348
1/345. See A021349
1/346. See A021350
1/347. See A021351
1/348. See A021352
1/349. See A021353
1/35. See A021039
1/351. See A021355
1/352. See A021356
1/353. See A021357
1/354. See A021358
1/355. See A021359
1/356. See A021360
1/357. See A021361
1/358. See A021362
1/359. See A021363
1/36. See A021040
1/361. See A021365
1/362. See A021366
1/363. See A021367
1/364. See A021368
1/365. See A021369
1/366. See A021370
1/367. See A021371
1/368. See A021372
1/369. See A021373
1/37. See A021041
1/371. See A021375
1/372. See A021376
1/373. See A021377
1/374. See A021378
1/376. See A021380
1/377. See A021381
1/378. See A021382
1/379. See A021383
1/38. See A021042
1/381. See A021385
1/382. See A021386
1/383. See A021387
1/384. See A021388
1/385. See A021389
1/386. See A021390
1/387. See A021391
1/388. See A021392
1/389. See A021393
1/39. See A021043
1/391. See A021395
1/392. See A021396
1/393. See A021397
1/394. See A021398
1/395. See A021399
1/396. See A021400
1/397. See A021401
1/398. See A021402
1/399. See A021403
1/4 - 2/Pi^2. See A190357
1/4. See A020773
1/401. See A021405
1/402. See A021406
1/403. See A021407
1/404. See A021408
1/405. See A021409
1/406. See A021410
1/407. See A021411
1/408. See A021412
1/409. See A021413
1/41. See A021045
1/411. See A021415
1/412. See A021416
1/413. See A021417
1/414. See A021418
1/415. See A021419
1/416. See A021420
1/417. See A021421
1/418. See A021422
1/419. See A021423
1/42. See A021046
1/421. See A021425
1/422. See A021426
1/423. See A021427
1/424. See A021428
1/425. See A021429
1/426. See A021430
1/427. See A021431
1/428. See A021432
1/429. See A021433
1/43. See A021047
1/431. See A021435
1/432. See A021436
1/433. See A021437
1/434. See A021438
1/435. See A021439
1/436. See A021440
1/437. See A021441
1/438. See A021442
1/439. See A021443
1/440. See A021444
1/441. See A021445
1/442. See A021446
1/443. See A021447
1/444. See A021448
1/445. See A021449
1/446. See A021450
1/447. See A021451
1/448. See A021452
1/449. See A021453
1/451. See A021455
1/452. See A021456
1/453. See A021457
1/454. See A021458
1/455. See A021459
1/456. See A021460
1/457. See A021461
1/458. See A021462
1/459. See A021463
1/46. See A021050
1/461. See A021465
1/462. See A021466
1/463. See A021467
1/464. See A021468
1/465. See A021469
1/466. See A021470
1/467. See A021471
1/468. See A021472
1/469. See A021473
1/47. See A021051
1/471. See A021475
1/472. See A021476
1/473. See A021477
1/474. See A021478
1/475. See A021479
1/476. See A021480
1/477. See A021481
1/478. See A021482
1/479. See A021483
1/48. See A021052
1/481. See A021485
1/482. See A021486
1/483. See A021487
1/484. See A021488
1/485. See A021489
1/486. See A021490
1/487. See A021491
1/488. See A021492
1/489. See A021493
1/49. See A021053
1/491. See A021495
1/492. See A021496
1/493. See A021497
1/494. See A021498
1/495. See A021499
1/496. See A021500
1/497. See A021501
1/498. See A021502
1/5 Hypergeometric2F1[1, 5/8, 13/8, 1/16] = 0.205... used by BBP Pi formula See A145962
1/501. See A021505
1/502. See A021506
1/503. See A021507
1/504. See A021508
1/505. See A021509
1/506. See A021510
1/507. See A021511
1/508. See A021512
1/509. See A021513
1/51. See A021055
1/511. See A021515
1/512. See A021516
1/513. See A021517
1/514. See A021518
1/515. See A021519
1/516. See A021520
1/517. See A021521
1/518. See A021522
1/519. See A021523
1/52. See A021056
1/521. See A021525
1/522. See A021526
1/523. See A021527
1/524. See A021528
1/525. See A021529
1/526. See A021530
1/527. See A021531
1/528. See A021532
1/529. See A021533
1/53. See A021057
1/531. See A021535
1/532. See A021536
1/533. See A021537
1/534. See A021538
1/535. See A021539
1/536. See A021540
1/537. See A021541
1/538. See A021542
1/539. See A021543
1/54. See A021058
1/541. See A021545
1/542. See A021546
1/543. See A021547
1/544. See A021548
1/545. See A021549
1/546. See A021550
1/547. See A021551
1/548. See A021552
1/549. See A021553
1/55. See A021059
1/550. See A021554
1/551. See A021555
1/552. See A021556
1/553. See A021557
1/554. See A021558
1/555. See A021559
1/556. See A021560
1/557. See A021561
1/558. See A021562
1/559. See A021563
1/56. See A021060
1/560. See A021564
1/561. See A021565
1/562. See A021566
1/563. See A021567
1/564. See A021568
1/565. See A021569
1/566. See A021570
1/567. See A021571
1/568. See A021572
1/569. See A021573
1/57. See A021061
1/570. See A021574
1/571. See A021575
1/572. See A021576
1/573. See A021577
1/574. See A021578
1/575. See A021579
1/576. See A021580
1/577. See A021581
1/578. See A021582
1/579. See A021583
1/58. See A021062
1/580. See A021584
1/581. See A021585
1/582. See A021586
1/583. See A021587
1/584. See A021588
1/585. See A021589
1/586. See A021590
1/587. See A021591
1/588. See A021592
1/589. See A021593
1/59. See A021063
1/591. See A021595
1/592. See A021596
1/593. See A021597
1/594. See A021598
1/595. See A021599
1/596. See A021600
1/597. See A021601
1/598. See A021602
1/599. See A021603
1/6 - 1/(2*Pi). See A110191
1/6. See A020793
1/601. See A021605
1/602. See A021606
1/603. See A021607
1/604. See A021608
1/605. See A021609
1/606. See A021610
1/607. See A021611
1/608. See A021612
1/609. See A021613
1/61. See A021065
1/611. See A021615
1/612. See A021616
1/613. See A021617
1/614. See A021618
1/615. See A021619
1/616. See A021620
1/617. See A021621
1/618. See A021622
1/619. See A021623
1/62. See A021066
1/620. See A021624
1/621. See A021625
1/622. See A021626
1/623. See A021627
1/624. See A021628
1/626. See A021630
1/627. See A021631
1/628. See A021632
1/629. See A021633
1/63. See A021067
1/631. See A021635
1/632. See A021636
1/633. See A021637
1/634. See A021638
1/635. See A021639
1/636. See A021640
1/637. See A021641
1/638. See A021642
1/639. See A021643
1/64. See A021068
1/641. See A021645
1/642. See A021646
1/643. See A021647
1/644. See A021648
1/645. See A021649
1/64532 (related to an optimal mixed strategy for Hofstadter's million dollar game). See A110617
1/646. See A021650
1/647. See A021651
1/648. See A021652
1/649. See A021653
1/65. See A021069
1/650. See A021654
1/651. See A021655
1/652. See A021656
1/653. See A021657
1/654. See A021658
1/655. See A021659
1/65537. See A236184
1/656. See A021660
1/657. See A021661
1/658. See A021662
1/659. See A021663
1/66. See A021070
1/661. See A021665
1/662. See A021666
1/663. See A021667
1/664. See A021668
1/665. See A021669
1/666. See A021670
1/667. See A021671
1/668. See A021672
1/669. See A021673
1/67. See A021071
1/671. See A021675
1/672. See A021676
1/673. See A021677
1/674. See A021678
1/675. See A021679
1/676. See A021680
1/677. See A021681
1/678. See A021682
1/679. See A021683
1/68. See A021072
1/681. See A021685
1/682. See A021686
1/683. See A021687
1/684. See A021688
1/685. See A021689
1/686. See A021690
1/687. See A021691
1/688. See A021692
1/689. See A021693
1/69. See A021073
1/691. See A021695
1/692. See A021696
1/693. See A021697
1/694. See A021698
1/695. See A021699
1/696. See A021700
1/697. See A021701
1/698. See A021702
1/699. See A021703
1/7. See A020806
1/701. See A021705
1/702. See A021706
1/703. See A021707
1/704. See A021708
1/705. See A021709
1/706. See A021710
1/707. See A021711
1/708. See A021712
1/709. See A021713
1/71. See A021075
1/711. See A021715
1/712. See A021716
1/713. See A021717
1/714. See A021718
1/715. See A021719
1/716. See A021720
1/717. See A021721
1/718. See A021722
1/719. See A021723
1/721. See A021725
1/722. See A021726
1/723. See A021727
1/724. See A021728
1/725. See A021729
1/726. See A021730
1/727. See A021731
1/728. See A021732
1/729. See A021733
1/73. See A021077
1/731. See A021735
1/732. See A021736
1/733. See A021737
1/734. See A021738
1/735. See A021739
1/736. See A021740
1/737. See A021741
1/738. See A021742
1/739. See A021743
1/74. See A021078
1/741. See A021745
1/742. See A021746
1/743. See A021747
1/744. See A021748
1/745. See A021749
1/746. See A021750
1/747. See A021751
1/748. See A021752
1/749. See A021753
1/751. See A021755
1/752. See A021756
1/753. See A021757
1/754. See A021758
1/755. See A021759
1/756. See A021760
1/757. See A021761
1/758. See A021762
1/759. See A021763
1/76. See A021080
1/761. See A021765
1/762. See A021766
1/763. See A021767
1/764. See A021768
1/765. See A021769
1/766. See A021770
1/767. See A021771
1/769. See A021773
1/77. See A021081
1/771. See A021775
1/772. See A021776
1/773. See A021777
1/774. See A021778
1/775. See A021779
1/776. See A021780
1/777. See A021781
1/778. See A021782
1/779. See A021783
1/78. See A021082
1/781. See A021785
1/782. See A021786
1/783. See A021787
1/784. See A021788
1/785. See A021789
1/786. See A021790
1/787. See A021791
1/788. See A021792
1/789. See A021793
1/79. See A021083
1/791. See A021795
1/792. See A021796
1/793. See A021797
1/794. See A021798
1/795. See A021799
1/796. See A021800
1/797. See A021801
1/798. See A021802
1/799. See A021803
1/8 (-1 - Sqrt[5] + Sqrt[6 (5 - Sqrt[5])]) See A019815
1/8. See A020821
1/801. See A021805
1/802. See A021806
1/803. See A021807
1/804. See A021808
1/805. See A021809
1/806. See A021810
1/807. See A021811
1/808. See A021812
1/809. See A021813
1/81. See A021085
1/811. See A021815
1/812. See A021816
1/813. See A021817
1/814. See A021818
1/815. See A021819
1/816. See A021820
1/817. See A021821
1/818. See A021822
1/819. See A021823
1/82. See A021086
1/821. See A021825
1/822. See A021826
1/823. See A021827
1/824. See A021828
1/824633702441. See A286651
1/826. See A021830
1/827. See A021831
1/828. See A021832
1/829. See A021833
1/83. See A021087
1/831. See A021835
1/832. See A021836
1/833. See A021837
1/834. See A021838
1/835. See A021839
1/836. See A021840
1/837. See A021841
1/838. See A021842
1/839. See A021843
1/84. See A021088
1/841. See A021845
1/842. See A021846
1/843. See A021847
1/844. See A021848
1/845. See A021849
1/846. See A021850
1/847. See A021851
1/848. See A021852
1/849. See A021853
1/85. See A021089
1/851. See A021855
1/852. See A021856
1/853. See A021857
1/854. See A021858
1/855. See A021859
1/856. See A021860
1/857. See A021861
1/858. See A021862
1/859. See A021863
1/86. See A021090
1/861. See A021865
1/862. See A021866
1/863. See A021867
1/864. See A021868
1/865. See A021869
1/866. See A021870
1/867. See A021871
1/868. See A021872
1/869. See A021873
1/87. See A021091
1/871. See A021875
1/872. See A021876
1/873. See A021877
1/874. See A021878
1/875. See A021879
1/876. See A021880
1/877. See A021881
1/878. See A021882
1/879. See A021883
1/881. See A021885
1/882. See A021886
1/883. See A021887
1/884. See A021888
1/885. See A021889
1/886. See A021890
1/887. See A021891
1/888. See A021892
1/889. See A021893
1/89. See A021093
1/891. See A021895
1/892. See A021896
1/893. See A021897
1/894. See A021898
1/895. See A021899
1/896. See A021900
1/897. See A021901
1/898. See A021902
1/899. See A021903
1/8991. See A113675
1/9*sqrt(1 - 1/10^20) with repeating strings of digits shown in parentheses for clarity: See A060011
1/9. See A000012
1/9. See A261012
1/90. See A057427
1/901. See A021905
1/902. See A021906
1/903. See A021907
1/904. See A021908
1/905. See A021909
1/906. See A021910
1/907. See A021911
1/908. See A021912
1/909. See A021913
1/91. See A021095
1/911. See A021915
1/912. See A021916
1/913. See A021917
1/914. See A021918
1/915. See A021919
1/916. See A021920
1/917. See A021921
1/918. See A021922
1/919. See A021923
1/92. See A021096
1/921. See A021925
1/922. See A021926
1/923. See A021927
1/924. See A021928
1/925. See A021929
1/926. See A021930
1/927. See A021931
1/928. See A021932
1/929. See A021933
1/93. See A021097
1/930. See A021934
1/931. See A021935
1/932. See A021936
1/933. See A021937
1/934. See A021938
1/935. See A021939
1/936. See A021940
1/937. See A021941
1/938. See A021942
1/939. See A021943
1/94. See A021098
1/941. See A021945
1/942. See A021946
1/943. See A021947
1/944. See A021948
1/945. See A021949
1/946. See A021950
1/947. See A021951
1/948. See A021952
1/949. See A021953
1/95. See A021099
1/951. See A021955
1/952. See A021956
1/953. See A021957
1/954. See A021958
1/955. See A021959
1/956. See A021960
1/957. See A021961
1/958. See A021962
1/959. See A021963
1/96. See A021100
1/961. See A021965
1/962. See A021966
1/963. See A021967
1/964. See A021968
1/965. See A021969
1/966. See A021970
1/967. See A021971
1/968. See A021972
1/969. See A021973
1/97. See A021101
1/971. See A021975
1/972. See A021976
1/973. See A021977
1/974. See A021978
1/975. See A021979
1/976. See A021980
1/977. See A021981
1/978. See A021982
1/979. See A021983
1/98. See A021102
1/9801. See A034948
1/98019801. See A036663
1/980198019801. See A036664
1/9801980198019801. See A036665
1/981. See A021985
1/982. See A021986
1/983. See A021987
1/984. See A021988
1/985. See A021989
1/986. See A021990
1/987. See A021991
1/988. See A021992
1/989. See A021993
1/9899. See A227093
1/99. See A000035
1/991. See A021995
1/992. See A021996
1/993. See A021997
1/994. See A021998
1/995. See A021999
1/997. See A022001
1/998. See A022002
1/998999. See A136274
1/999. See A022003
1/999. See A079978
1/9998. See A236799
1/999999. See A079979
1/999999. See A172051
1/abs(log_10(sine of 1 radian)). See A117032
1/abs(log_10(tan 1 degree)). See A111770
1/delta, where delta = Feigenbaum constant. See A108952
1/e + 1/Pi. See A105798
1/e - 1/e^2. See A278327
1/e. See A068985
1/exp(exp(1)-1). See A274169
1/e^2 + 1/Pi^2. See A113399
1/e^2. See A092553
1/F_p where F_p is the Planck force, see A228817. See A228818
1/gamma, where gamma is Euler-Mascheroni constant. See A098907
1/log(2)-1, the mean value of a random variable following the Gauss-Kuzmin distribution. See A242053
1/log(3). See A121935
1/log(phi). See A160509
1/log(Pi). See A182499
1/log_2(r), where r is Otter's rooted tree constant. See A263183
1/phi + 1/phi^3 + 1/phi^5 + 1/phi^7, where phi is the Golden Ratio. See A249601
1/phi + 1/phi^3 + 1/phi^5, where phi is the Golden Ratio. See A249600
1/phi = phi - 1. See A094214
1/Pi*Integral_{0..Pi} x^2*log(2*cos(x/2))^2 dx, one of the log-cosine integrals related to zeta(4). See A256593
1/Pi. See A049541
1/Pi^2. See A092742
1/Pi^4. See A092744
1/s, where s = sum_{n = 1..infinity} 1/p(n), where p(n) is the product of numbers n^2 + 1 to (n+1)^2 - 1. See A219734
1/sin(arctan(1/t)) or t/sin(arctan(t)) where t = 2*Pi: hypotenuse for a right triangle of equal area to a disk. See A233700
1/sqrt(11). See A020768
1/sqrt(12) = 1/(2*sqrt(3)). See A020769
1/sqrt(128). See A222066
1/sqrt(13). See A020770
1/sqrt(14). See A020771
1/sqrt(15). See A020772
1/sqrt(17). See A020774
1/sqrt(18). See A020775
1/sqrt(19). See A020776
1/sqrt(2 - sqrt(2)) (reciprocal of A101464). See A285871
1/sqrt(2). See A010503
1/sqrt(2*Pi). See A231863
1/sqrt(2*Pi*E), one of the Traveling Salesman constants. See A240717
1/sqrt(21). See A020778
1/sqrt(22). See A020779
1/sqrt(23). See A020780
1/sqrt(24). See A020781
1/sqrt(26). See A020783
1/sqrt(27). See A020784
1/sqrt(28). See A020785
1/sqrt(29). See A020786
1/sqrt(3). See A020760
1/sqrt(30). See A020787
1/sqrt(31). See A020788
1/sqrt(32). See A020789
1/sqrt(33). See A020790
1/sqrt(34). See A020791
1/sqrt(35). See A020792
1/sqrt(37). See A020794
1/sqrt(38). See A020795
1/sqrt(39). See A020796
1/sqrt(40). See A020797
1/sqrt(41). See A020798
1/sqrt(42). See A020799
1/sqrt(43). See A020800
1/sqrt(44). See A020801
1/sqrt(45). See A020802
1/sqrt(46). See A020803
1/sqrt(47). See A020804
1/sqrt(48). See A020805
1/sqrt(5). See A020762
1/sqrt(50). See A020807
1/sqrt(51). See A020808
1/sqrt(52). See A020809
1/sqrt(53). See A020810
1/sqrt(54). See A020811
1/sqrt(55). See A020812
1/sqrt(56). See A020813
1/sqrt(57). See A020814
1/sqrt(58). See A020815
1/sqrt(59). See A020816
1/sqrt(6). See A020763
1/sqrt(60). See A020817
1/sqrt(61). See A020818
1/sqrt(62). See A020819
1/sqrt(63). See A020820
1/sqrt(65). See A020822
1/sqrt(66). See A020823
1/sqrt(67). See A020824
1/sqrt(68). See A020825
1/sqrt(69). See A020826
1/sqrt(7). See A020764
1/sqrt(70). See A020827
1/sqrt(71). See A020828
1/sqrt(72) = 1/(3*2^(3/2)) = sqrt(2)/12. See A020829
1/sqrt(73). See A020830
1/sqrt(74). See A020831
1/sqrt(75). See A020832
1/sqrt(76). See A020833
1/sqrt(77). See A020834
1/sqrt(78). See A020835
1/sqrt(79). See A020836
1/sqrt(8). See A020765
1/sqrt(8*Pi). See A218708
1/sqrt(80). See A020837
1/sqrt(82). See A020839
1/sqrt(83). See A020840
1/sqrt(84). See A020841
1/sqrt(85). See A020842
1/sqrt(86). See A020843
1/sqrt(87). See A020844
1/sqrt(88). See A020845
1/sqrt(89). See A020846
1/sqrt(90). See A020847
1/sqrt(91). See A020848
1/sqrt(92). See A020849
1/sqrt(93). See A020850
1/sqrt(94). See A020851
1/sqrt(95). See A020852
1/sqrt(96). See A020853
1/sqrt(97). See A020854
1/sqrt(98). See A020855
1/sqrt(99). See A020856
1/sqrt(Pi + e). See A094244
1/sqrt(Pi). See A087197
1/sqrt(Pi*e). See A096411
1/zeta(2) -1/e^gamma, where gamma is the Euler-Mascheroni constant, and zeta(2) = Pi^2/6. See A181110
1/zeta(3). See A088453
1/zeta(4), the inverse of A013662. This is the probability that 4 randomly chosen natural numbers are relatively prime. See A215267
10!^(1/10). See A281143
10-e. See A121239
10-Pi. See A030644
10/44955. See A113694
100000000/999999999. See A267142
100th root of 100. See A011519
101/450. See A267649
101/970299. See A138478
101010101/110010011 = 10101110101/11001110011 = 1010111110101/1100111110011 = .... See A182494
1018994/9000009. See A131015
1023949/9000009. See A131707
103050709/1111111111. See A172423
104348 / 33215. See A068089
105/Pi^4. See A157290
109739369/111111111. See A138531
10th root of 10. See A011279
10th root of 11. See A011294
10th root of 12. See A011309
10th root of 13. See A011324
10th root of 14. See A011339
10th root of 15. See A011354
10th root of 17. See A011384
10th root of 18. See A011399
10th root of 19. See A011414
10th root of 2. See A010772
10th root of 20. See A011429
10th root of 5. See A011204
10th root of 6. See A011219
10th root of 7. See A011234
10th root of 8. See A011249
10th Stieltjes constant. See A184854
10^(3/4). See A210522
11*Pi/10. See A061146
11*Pi^5/1440. See A193713
11+3*sqrt(2). See A157121
11-3*sqrt(2). See A157122
11/18. See A257936
11/45. See A040002
11/90. See A040000
11/909. See A007877
11/e. See A135011
11/Pi. See A132701
1110119/9999990. See A204688
11105/90909. See A158068
11111/9000. See A210032
111111112/900000009. See A262734
1112/9009. See A028356
1112/9999. See A177704
112/999. See A177702
112121/999999. See A131718
1135210/333333 or the continued fraction of (81+sqrt(9867))/58. See A158677
1195/9009. See A033940
11999/99900. See A141571
11th root of 10. See A011280
11th root of 11. See A011295
11th root of 12. See A011310
11th root of 13. See A011325
11th root of 14. See A011340
11th root of 15. See A011355
11th root of 16. See A011370
11th root of 17. See A011385
11th root of 18. See A011400
11th root of 19. See A011415
11th root of 2. See A010773
11th root of 20. See A011430
11th root of 4. See A011190
11th root of 5. See A011205
11th root of 6. See A011220
11th root of 7. See A011235
11th root of 8. See A011250
11th root of 9. See A011265
11^n contains no pair of consecutive equal digits (probably finite). See A050731
11^n contains no zeros (probably finite). See A030706
12*sin(Pi/12). See A280819
12/e. See A135012
12/Pi. See A132702
12/sqrt(Pi), the average perimeter of a random Gaussian triangle in three dimensions. See A249539
121/819. See A084104
121/900. See A113311
121/909. See A084101
124/999. (End) See A069705
124112510/99999999. See A158570
12443/109890 = 0.1132314132314... . See A220128
12468/11111. See A135352
1248/11111. See A076839
12484270798876404618091 / 1111111111111111111111110 = 0.0[112358437189887641562819] (periodic). See A030132
125/1001. See A153130
1256/9999. See A131800
127/216. See A143618
127th root of 127. See A131596
128/(45*Pi). See A093070
12th root of 10. See A011281
12th root of 11. See A011296
12th root of 12. See A011311
12th root of 13. See A011326
12th root of 14. See A011341
12th root of 15. See A011356
12th root of 17. See A011386
12th root of 18. See A011401
12th root of 19. See A011416
12th root of 2. See A010774
12th root of 20. See A011431
12th root of 5. See A011206
12th root of 6. See A011221
12th root of 7. See A011236
13-5*sqrt(5). See A225667
13/36. See A142464
13/720 - Pi^2/15015. See A093525
13/90. See A123932
13/Pi. See A132703
13073/81819. See A140724
1324/99999. See A070471
133/999. See A169609
1331/9000. See A115291
1343/10989. See A083039
13705/111111. See A131282
13717421 / 1111111110 See A010888
13717421/111111111. See A177274
137174210/1111111111 = 0.1234567890123456789012345678901234... See A010879
1379/9999. See A131712
138/1111 and the continued fractions of (5+3*sqrt(10))/10 or (6*sqrt(10)-10)/13. See A177002
13942/111111. See A153990
13th root of 10. See A011282
13th root of 11. See A011297
13th root of 12. See A011312
13th root of 13. See A011327
13th root of 14. See A011342
13th root of 15. See A011357
13th root of 16. See A011372
13th root of 17. See A011387
13th root of 18. See A011402
13th root of 19. See A011417
13th root of 2. See A010775
13th root of 20. See A011432
13th root of 4. See A011192
13th root of 5. See A011207
13th root of 6. See A011222
13th root of 7. See A011237
13th root of 8. See A011252
13th root of 9. See A011267
14*sin(Pi/14). See A280533
14/Pi. See A132704
142/999. See A153727
148/1001. See A154687
149597870700/299792458. See A230979
149896229*sqrt(2). See A229962
149896229/Pi. See A182997
14th root of 10. See A011283
14th root of 11. See A011298
14th root of 12. See A011313
14th root of 13. See A011328
14th root of 14. See A011343
14th root of 15. See A011358
14th root of 17. See A011388
14th root of 18. See A011403
14th root of 19. See A011418
14th root of 2. See A010776
14th root of 20. See A011433
14th root of 5. See A011208
14th root of 6. See A011223
14th root of 7. See A011238
14th root of 8. See A011253
15*e. See A196533
15/Pi^2. See A082020
1575/Pi^6. See A157294
15th root of 10. See A011284
15th root of 11. See A011299
15th root of 12. See A011314
15th root of 13. See A011329
15th root of 14. See A011344
15th root of 15. See A011359
15th root of 16. See A011374
15th root of 17. See A011389
15th root of 18. See A011404
15th root of 19. See A011419
15th root of 2. See A010777
15th root of 20. See A011434
15th root of 4. See A011194
15th root of 5. See A011209
15th root of 6. See A011224
15th root of 7. See A011239
15th root of 9. See A011269
16*Pi^3/105. See A164106
16*Pi^3/15. See A164107
16/27. See A214395
16/9. See A255910
16/Pi. See A132706
16000000/63. See A182480
16076/142857. See A076840
166285490/1111111111. See A008959
16934/37037 and the continued fractions of 0.23839... = (sqrt(496555)-667)/158 or of 4.194699... = (667+sqrt(496555))/327. See A177883
16th root of 10. See A011285
16th root of 11. See A011300
16th root of 12. See A011315
16th root of 13. See A011330
16th root of 14. See A011345
16th root of 15. See A011360
16th root of 17. See A011390
16th root of 18. See A011405
16th root of 19. See A011420
16th root of 2. See A010778
16th root of 20. See A011435
16th root of 5. See A011210
16th root of 6. See A011225
16th root of 7. See A011240
16th root of 8. See A011255
17+12*sqrt(2). See A156164
17/(22*Pi)*integral_{t=0..Pi} ((Pi-t)^2*log(2*sin(t/2))^2 dt. See A218505
17/111. See A130794
17/24 + log(2). See A100045
17/33. See A176260
17/36*Zeta(4). See A086464
17/Pi. See A132707
172*(43/57)^(1/3)/399. See A225357
17th root of 10. See A011286
17th root of 11. See A011301
17th root of 12. See A011316
17th root of 13. See A011331
17th root of 14. See A011346
17th root of 15. See A011361
17th root of 16. See A011376
17th root of 17. See A011391
17th root of 18. See A011406
17th root of 19. See A011421
17th root of 2. See A010779
17th root of 20. See A011436
17th root of 4. See A011196
17th root of 5. See A011211
17th root of 6. See A011226
17th root of 7. See A011241
17th root of 8. See A011256
17th root of 9. See A011271
18 - 24*log(2) See A159354
18*sin(Pi/18). See A280633
18+5*sqrt(2). See A157214
18-5*sqrt(2). See A157215
18/Pi, the radius of a sphere (or ball) whose volume equals the surface area of the circumscribed cube. See A072097
180*(1 - arctan(2)/Pi). See A242723
180*arccos(-1/4)/Pi. See A140245
180*arccos(1-8/(Pi^2))/Pi. See A120670
180*arccos(1/3)/Pi. See A137915
180*arccos(11/16)/Pi. See A140243
180*arccos(7/8)/Pi. See A140241
180*arctan(3*sqrt(15)/29)/Pi. See A140273
180/Pi. See A072097
181/333. See A164360
18th root of 10. See A011287
18th root of 11. See A011302
18th root of 12. See A011317
18th root of 13. See A011332
18th root of 14. See A011347
18th root of 15. See A011362
18th root of 17. See A011392
18th root of 18. See A011407
18th root of 19. See A011422
18th root of 2. See A010780
18th root of 20. See A011437
18th root of 5. See A011212
18th root of 6. See A011227
18th root of 7. See A011242
19/Pi. See A132709
190/89. See A177940
192*K^2*G/Pi^4 = prod_(p prime congruent to 1 modulo 4) (1 + 1/p^2), where K is the Landau-Ramanujan constant and G Catalan's constant. See A243380
199/1287. See A070365
19th root of 10. See A011288
19th root of 11. See A011303
19th root of 12. See A011318
19th root of 13. See A011333
19th root of 14. See A011348
19th root of 15. See A011363
19th root of 16. See A011378
19th root of 17. See A011393
19th root of 18. See A011408
19th root of 19. See A011423
19th root of 2. See A010781
19th root of 20. See A011438
19th root of 4. See A011198
19th root of 5. See A011213
19th root of 6. See A011228
19th root of 7. See A011243
19th root of 8. See A011258
19th root of 9. See A011273
1st Lebesgue constant L1. See A226654
1st Stieltjes constant gamma_1 (negated). See A082633

### Start of section 2

2 + 2*cos(2*Pi/7). See A116425
2 + 2*sqrt(2). See A090488
2 + 21/4*(4/11)^(4/3). See A236258
2 - log(4). See A188859
2 - phi. See A132338
2 - Pi^2/6. See A152416
2 cos(3 Pi/7). See A255241
2 divided by golden ratio = 2/phi = 4/(1 + sqrt(5)) = 2*(-1 + phi). See A134972
2*(1 + Pi*e^Pi*(1 + erf(sqrt(Pi)))). See A128892
2*(1+3^(3/2)/(2*Pi)). See A289504
2*(14*sigma+5)/625 where sigma = sqrt(5)*log(golden ratio). See A157701
2*(18 + sqrt(3)*Pi)/27. See A091682
2*(5-3*exp(1/2))/(2*exp(1/2)-1). See A108813
2*(6 - sqrt(2))/17. See A128426
2*(sqrt(2) - 1). See A163960
2*arccsch(2)^2. See A086467
2*cos(Pi/7). See A160389
2*e. See A019762
2*e/11. See A019767
2*e/13. See A019768
2*e/15. See A019769
2*e/17. See A019770
2*e/19. See A019771
2*e/21. See A019772
2*e/23. See A019773
2*e/3. See A019763
2*e/5 (or 4*e). See A019764
2*e/7. See A019765
2*e/9. See A019766
2*exp(-gamma). See A125313
2*e^(-2*gamma), gamma being the Euler constant. See A241532
2*G/(Pi*log(2)), a constant appearing in the average root bifurcation ratio of binary trees, where G is Catalan's constant. See A247036
2*gamma-1, where gamma is the Euler-Mascheroni constant. See A147533
2*K/Pi, a constant related to the asymptotic evaluation of the number of positive integers all of whose prime factors are congruent to 3 modulo 4, where K is the Landau-Ramanujan constant. See A243376
2*log(1+sqrt(2)), the integral over the square [0,1]x[0,1] of 1/sqrt(x^2+y^2) dx dy. See A244920
2*log(1/2+1/sqrt(2)). See A157699
2*Log[5/3] = 1.0216... used by BBP Pi formula See A145960
2*Pi*e. See A019597
2*Pi*e/11. See A019602
2*Pi*e/13. See A019603
2*Pi*e/15. See A019604
2*Pi*e/17. See A019605
2*Pi*e/19. See A019606
2*Pi*e/21. See A019607
2*Pi*e/23. See A019608
2*Pi*e/3. See A019598
2*Pi*e/5. See A019599
2*Pi*e/7. See A019600
2*Pi*e/9. See A019601
2*Pi*phi(0), a constant appearing in connection with a study of zeros of the integral of xi(z), where phi(t) and xi(z) are functions related to Riemann's zeta function (see Finch reference for the definition of these functions). See A242056
2*Pi*phi, where phi = (1+sqrt(5))/2. See A094888
2*Pi. See A019692
2*pi/(1+2*pi). See A197732
2*pi/(1+4*pi). See A197731
2*Pi/(1+Pi). See A197733
2*Pi/(2+Pi). See A197727
2*Pi/(4+Pi). See A197688
2*Pi/(7*Zeta(3)). See A185196
2*Pi/11. See A019697
2*Pi/13. See A019698
2*Pi/15 = (4*Pi/3)/10. See A019699
2*Pi/17. See A019700
2*Pi/19. See A019701
2*Pi/21. See A019702
2*Pi/23. See A019703
2*Pi/3. See A019693
2*Pi/5. See A019694
2*Pi/7. See A019695
2*Pi/9. See A019696
2*Pi/log(2). See A131223
2*Pi^2. See A164102
2*Pi^2/(7*Zeta(3)). See A185198
2*Pi^6/945. See A257136
2*sin(1/2). See A272795
2*sin(Pi/14). See A255241
2*sin(Pi/17), the ratio side/R in the regular 17-gon inscribed in a circle of radius R. See A228787
2*sin(Pi/18). See A130880
2*sin(Pi/5); the 'associate' of the golden ratio. See A182007
2*sqrt(2)*cos(Pi/8). See A121601
2*sqrt(2)/Pi. See A112628
2*sqrt(2/15). See A171535
2*sqrt(2/35). See A171548
2*sqrt(3)*log(2)/Pi. See A131266
2*sqrt(3/35). See A171541
2*sqrt(5)/5 arccsch(2). See A086466
2*sqrt(Pi) = 3.544907..., which is the smallest possible perimeter index eta=P/sqrt(A) of all figures (not necessarily connected) in the Euclidean plane with a continuous boundary of length P (perimeter) enclosing a finite area A. The smallest value is attained only by an Euclidean planar disk. For example, eta=4 for squares, eta=2(sqrt(a/b)+sqrt(b/a))>=4 for aXb rectangles, and eta=4.559014... (A268604) for equilateral triangles. See A019707
2*sqrt(Pi)/3^(1/4). See A179275
2*Sum_{k=1..5000000} (-1)^(k-1)/(2k-1). See A216547
2*Sum_{k=1..500000} (-1)^(k-1)/(2k-1). See A216545
2*Sum_{k=1..50000} (-1)^(k-1)/(2k-1). See A013706
2*Sum_{k>=0} 1/Product_{i=0..k} (2^(2^i) - 1). See A258715
2*x, where constant x (A109169) satisfies the condition that the continued fraction expansion of 2*x (A109170) is equal to the continued fraction expansion of x (A109168) interleaved with positive even numbers. See A109171
2*Zeta(3). See A152648
2+sqrt(6). See A176213
2-e^(1/e). See A173602
2-sqrt(2), square of the edge length of a regular octagon with circumradius 1. See A101465
2/(3*sqrt(3)) = 2*sqrt(3)/9. See A212886
2/(4th root of 3). See A154605
2/(Gamma(3/4))^4. See A277235
2/(pi*e). See A094936
2/3 + zeta(1/2)/sqrt(2*Pi). See A096616
2/e. See A135002
2/log(1+sqrt(2)). See A169800
2/log(2). See A131920
2/log(4/3). See A069864
2/Pi^2. See A185197
2/sqrt(35). See A171543
2/sqrt(7). See A171536
2/sqrt(e), a constant appearing in the expression of the asymptotic expected volume V(d) of the convex hull of randomly selected n(d) vertices (with replacement) of a d-dimensional unit cube. See A249455
2/sqrt(Pi). See A190732
20/log(10). See A282152
20/phi^2, where phi is the golden ratio. Also (with a different offset), decimal expansion of 3 - sqrt(5). See A187799
20/phi^2, where phi is the golden ratio. Also (with a different offset), decimal expansion of 3 - sqrt(5). See A187799
206545-digit integer solution to Archimedes' cattle problem. See A096151
208284810/1111111111. See A008960
20th root of 10. See A011289
20th root of 11. See A011304
20th root of 12. See A011319
20th root of 13. See A011334
20th root of 14. See A011349
20th root of 15. See A011364
20th root of 17. See A011394
20th root of 18. See A011409
20th root of 19. See A011424
20th root of 2. See A010782
20th root of 20. See A011439
20th root of 5. See A011214
20th root of 6. See A011229
20th root of 7. See A011244
20th root of 8. See A011259
21/(2Pi^2). See A088246
21/Pi. See A132711
2187/2048, the Pythagorean apotome. See A229948
21st root of 21. See A011440
22*Pi + 4*e. See A121313
22*sin(Pi/22). See A280725
22/111. See A275615
22/7 - Pi. See A003077
22/7. See A068028
22/Pi. See A132712
221/1111. See A269222
22nd root of 22. See A011441
23/19. See A073583
23/Pi. See A132713
23719213606865169775282 / 111111111111111111111111 = 0.[213472922461786527977538] (periodic). See A030133
23rd root of 23. See A011442
24/Pi. See A132714
24th root of 24. See A011443
25 - 10*sqrt(5). See A229760
25*sqrt(3)/4, Area of equilateral triangle of side 5. See A179048
25/1818. See A267317
25/99. See A010695
25/Pi. See A132715
252474727/333333333. See A171677
256/243, the Pythagorean semitone. See A229943
256/27. See A268315
256/81. See A210621
25th root of 25. See A011444
26/Pi. See A132716
26th root of 26. See A011445
27/Pi. See A132717
27th root of 27. See A011446
28*sqrt(3) - 48. See A245670
28/e. See A135028
28/Pi. See A132718
28th root of 28. See A011447
29*Pi^3/864. See A251967
29/Pi. See A132719
2989/9000. See A261143
29th root of 29. See A011448
2E(2i sqrt(2)), where E(k) is the complete elliptic integral of the 2nd kind. See A093728
2F1(1, 1/4; 5/4; -1/4), where 2F1 is a Gaussian hypergeometric function. See A244844
2Log[3] - 4ArcCot[2] = 0.342634... used by BBP Pi formula See A145961
2nd Du Bois-Reymond constant. See A062546
2nd Lebesgue constant L2. See A226655
2nd Stieltjes constant gamma_2 (negated). See A086279
2sqrt(3)/(3Pi). See A165952
2sqrt(3)/(9Pi). See A165922
2Zeta[3]/5. See A086468
2^(1/3) + sqrt(3). See A160331
2^(1/4) - 2^(-1/4), the ordinate of the point of bisection of the arc of the unit lemniscate (x^2 + y^2)^2 = x^2 - y^2 in the first quadrant. See A154743
2^(1/e). See A185362
2^(1/phi). See A185262
2^(1/Pi). See A185361
2^(2^(2^(2^(2^2)))) = 2^^6. See A241291
2^(3/2) / (sqrt(Pi)*Gamma(3/4)^2). See A278146
2^(5/4)*sqrt(Pi)*exp(Pi/8)/Gamma(1/4)^2. See A094692
2^(Pi*sqrt(2)). See A217458
2^-1 + 2^-2 + 2^-4 + 2^-6 + 2^-10 + ..., where the exponents are 1 less than the primes. See A119523
2^-50. See A248622
2^107 - 1. See A169684
2^11213 - 1, the 23rd Mersenne prime A000668(23). See A275980
2^127-1. See A169681
2^1279 - 1, the 15th Mersenne prime A000668(15). See A248931
2^19937 - 1, the 24th Mersenne prime A000668(24). See A275981
2^21701 - 1, the 25th Mersenne prime A000668(25). See A275982
2^2203 - 1, the 16th Mersenne prime A000668(16). See A248932
2^2281 - 1, the 17th Mersenne prime A000668(17). See A248933
2^23209 - 1, the 26th Mersenne prime A000668(26). See A275983
2^30402457-1. See A117853
2^3217 - 1, the 18th Mersenne prime A000668(18). See A248934
2^4253 - 1, the 19th Mersenne prime A000668(19). See A248935
2^43112609 - 1, the largest known prime number as of 2011. See A193864
2^4423 - 1, the 20th Mersenne prime A000668(20). See A248936
2^44497 - 1, the 27th Mersenne prime A000668(27). See A275984
2^521 - 1. See A169685
2^607 - 1, the 14th Mersenne prime A000668(14). See A204063
2^9689 - 1, the 21st Mersenne prime A000668(21). See A275977
2^9941 - 1, the 22nd Mersenne prime A000668(22). See A275979
2^e (Froda's constant). See A262993
2^i + 2^(-i), where i = sqrt(-1). See A237192
2^n contains no pair of consecutive equal digits (probably finite). See A050723
2^Pi. See A217459
2^sqrt(2). See A007507

### Start of section 3

3 + 2*sqrt(2). See A156035
3 + 2*Sum_{k>=0} 1/Product_{i=0..k} (2^(2^i) - 1). See A258716
3 + log_2(3) + log_2(3 + log_2(3)). See A229177
3 + sqrt(15). See A092294
3 + sqrt(2)/10. See A120731
3 + sqrt(3). See A165663
3*(15+7*sqrt(5))/10. See A176518
3*(sqrt(25 + 10*sqrt(5))), the surface area of a regular dodecahedron with edges of unit length. See A131595
3*c^2, where c is the speed of light in vacuum in SI units. See A235997
3*log(2)/2. See A262023
3*log(phi)/log(1+sqrt(2)). See A221149
3*Pi. See A122952
3*pi/(1+pi). See A197735
3*Pi/(2*Pi + sqrt(27)). See A262080
3*pi/(2+2*pi). See A197728
3*pi/(2+pi). See A197729
3*Pi/(4+Pi). See A197730
3*pi/(6+2*pi). See A197687
3*pi/(6+pi). See A197689
3*Pi/4. See A177870
3*Pi/5. See A228719
3*sqrt(15)/2. See A140249
3*sqrt(15)/4. See A140239
3*sqrt(2)*Pi^3/128. See A251809
3*sqrt(2/35). See A171544
3*sqrt(3)/(2*Pi). See A086089
3*sqrt(3)/(4*Pi). See A240935
3*sqrt(3)/16. See A212952
3*sqrt(39)/4. See A179022
3*sqrt(Pi), the average perimeter of a random Gaussian triangle in two dimensions. See A249538
3*Sum_{k=1..inf} 1/(10^k-1). See A135702
3*zeta(3)/(2*Pi^2), a constant appearing in the asymptotic evaluation of the average LCM of two integers chosen independently from the uniform distribution [1..n]. See A240976
3*Zeta(3)/(4*log(2)). See A275689
3*Zeta(5) - Zeta(3)*Pi^2/6. See A152651
3+2*sqrt(3). See A176394
3+sqrt(10). See A176398
3+sqrt(11). See A176395
3-e. See A153805
3-Pi^2/6-zeta(3). See A152419
3/(2*Pi). See A093582
3/(2*sqrt(Pi)). See A243446
3/(2^(1/2)). See A230981
3/(4*Pi). See A270230
3/(8 - 6*sqrt(3)/Pi). See A262041
3/(8*K), a constant related to the asymptotic evaluation of the number of positive integers that can be expressed as the sum of two coprime squares, where K is the Landau-Ramanujan constant. See A243372
3/2 - gamma / log(2), a coin tossing constant related to the asymptotic evaluation of the expected length of the longest run of consecutive heads. See A244293
3/2. See A152623
3/4 - log(2). See A239354
3/4. See A152627
3/e. See A135003
3/Pi^2. See A104141
3/sqrt(2*Pi). See A235916
3/sqrt(Pi). See A289503
30th root of 30. See A011449
31/90. See A255176
31/99. See A176040
31/e. See A135031
31/Pi. See A132721
311/999. (End) See A109007
31185/(2*Pi^8). See A157296
315/(2*Pi^4). See A157292
31st root of 31. See A011450
32*Pi. See A265729
32*Pi^4/945. See A276023
32/27. See A261882
32/99. See A176059
32nd root of 32. See A011451
3310/999. See A144437
33321/10000. See A215409
334001/1001001. See A281258
3344161/1494696. See A208151
33rd root of 33. See A011452
34/303. See A130658
34th root of 34. See A011453
35/(48*Pi). See A189511
35/(48*Pi^2). See A093587
35/99. See A010703
355 / 113. See A068079
355/113-Pi. See A226043
35th root of 35. See A011454
36/Pi. See A234430
36/Pi^4. See A227929
360/7. See A216606
37/303. (End) See A014695
3704/33333. See A177706
371/3333. (End) See A093148
37370741/333333333. Terms of the simple continued fraction of 358/[sqrt(511229)-507]. See A156755
377/120. See A210622
378737078073678400/111111111111111111. See A158674
37th root of 37. See A011456
38th root of 38. See A011457
3977/216000 - Pi^2/2160. See A093524
39th root of 39. See A011458
3rd du Bois Reymond constant. See A224196
3rd Lebesgue constant L3. See A226656
3rd Stieltjes constant gamma_3. See A086280
3^(1/3) / 2^(1/6). See A271836
3^(1/e). See A205297
3^(1/Pi). See A205296
3^(3^(3^3)) = 3^^4. See A241292
3^i + 3^(-i), where i = sqrt(-1). See A237193
3^n contains no pair of consecutive equal digits (probably finite). See A050724
3^n contains no zeros (probably finite). See A030700
3^Pi. See A260629

### Start of section 4

4 * Product_{i=1..inf} ((1-3/(2*(i+1)))^(1/2^i). See A054400
4 + 2*sqrt(6). See A090654
4*(2 - Pi/3). See A210962
4*arctan(sqrt(2)/5)-Pi/3. See A267033
4*K/Pi, a constant appearing in the asymptotic evaluation of the number of non-hypotenuse numbers not exceeding a given bound, where K is the Landau-Ramanujan constant. See A244659
4*L/(3*Pi), a constant related to the asymptotic evaluation of the number of primes of the form a^2+b^4, where L is Gauss' lemniscate constant. See A243340
4*Pi, the surface area of a sphere whose diameter equals the square root of 4, hence its radius is 1. More generally x*Pi is also the surface area of a sphere whose diameter equals the square root of x. See A019694
4*pi/(1+pi). See A197736
4*Pi/(zeta(3/2)^(2/3)). See A178857
4*Pi/3, the volume of a sphere of radius 1. See A019699
4*Pi/5. See A228824
4*Pi^2/27. See A214549
4*Pi^4/3. See A151927
4*prod(k>=0,1-1/(2^k+1)) See A085011
4*Sum_{k=1..5000000} (-1)^(k-1)/(2k-1). See A216548
4*Sum_{k=1..500000} (-1)^(k-1)/(2k-1). See A013705
4*Sum_{k=1..50000} (-1)^(k-1)/(2k-1). See A216543
4+2*sqrt(5). See A176453
4+2k, where k = z^(-3)+z^(-2)+z^(-1)+1+z+z^2+z^3 and z = exp(2*Pi*I/23). See A147777
4+sqrt(17). See A176458
4-Pi. See A153799
4/30. See A122553
4/9. See A010709
4/e. See A135004
4/h, where h is the Planck constant in SI units. See A289487
4/Pi - 1/2. See A211074
4/Pi. See A088538
4/Pi^2. See A185199
4/sqrt((1+sqrt(5))/2). See A202142
4/sqrt(35). See A171538
4/sqrt(Pi)*exp(-gamma/2)*K where K is the Landau-Ramanujan constant and gamma the Euler-Mascheroni constant. See A088540
4/sqrt(Pi), the average distance between two random Gaussian points in three dimensions. See A249521
40070/10101. See A269226
40th root of 40. See A011459
4181/9999 = 0.418141814181... See A089146
41st root of 41. See A011460
42223444 = 84446888/2 (see A129106). See A129107
42390704747/333333333333. See A156194
42nd root of 42. See A011461
42^42. See A104112
43rd root of 43. See A011462
44/333. See A130784
447668335336223/37037037037037037. See A168037
44th root of 44. See A011463
45th root of 45. See A011464
466/885. See A276566
46th root of 46. See A011465
477/4237. See A267693
47th root of 47. See A011466
486^(1/3). See A181624
48th root of 48. See A011467
49/36. See A177022
49th root of 49. See A011468
4th Du Bois Reymond constant. See A207528
4th Madelung constant (negated). See A090734
4th root of 10. See A011007
4th root of 11. See A011008
4th root of 12. See A011009
4th root of 13. See A011010
4th root of 14. See A011011
4th root of 15. See A011012
4th root of 17. See A011013
4th root of 18. See A011014
4th root of 19. See A011015
4th root of 2. See A010767
4th root of 20. See A011016
4th root of 21. See A011017
4th root of 22. See A011018
4th root of 23. See A011019
4th root of 24. See A011020
4th root of 26. See A011021
4th root of 27. See A011022
4th root of 28. See A011023
4th root of 29. See A011024
4th root of 3. See A011002
4th root of 30. See A011025
4th root of 31. See A011026
4th root of 32. See A011027
4th root of 33. See A011028
4th root of 34. See A011029
4th root of 35. See A011030
4th root of 37. See A011031
4th root of 38. See A011032
4th root of 39. See A011033
4th root of 40. See A011034
4th root of 41. See A011035
4th root of 42. See A011036
4th root of 43. See A011037
4th root of 44. See A011038
4th root of 45. See A011039
4th root of 46. See A011040
4th root of 47. See A011041
4th root of 48. See A011042
4th root of 5. See A011003
4th root of 50. See A011043
4th root of 51. See A011044
4th root of 52. See A011045
4th root of 53. See A011046
4th root of 54. See A011047
4th root of 55. See A011048
4th root of 56. See A011049
4th root of 57. See A011050
4th root of 58. See A011051
4th root of 59. See A011052
4th root of 6. See A011004
4th root of 60. See A011053
4th root of 61. See A011054
4th root of 62. See A011055
4th root of 63. See A011056
4th root of 65. See A011057
4th root of 66. See A011058
4th root of 67. See A011059
4th root of 68. See A011060
4th root of 69. See A011061
4th root of 7. See A011005
4th root of 70. See A011062
4th root of 71. See A011063
4th root of 72. See A011064
4th root of 73. See A011065
4th root of 74. See A011066
4th root of 75. See A011067
4th root of 76. See A011068
4th root of 77. See A011069
4th root of 78. See A011070
4th root of 79. See A011071
4th root of 8. See A011006
4th root of 80. See A011072
4th root of 82. See A011073
4th root of 83. See A011074
4th root of 84. See A011075
4th root of 85. See A011076
4th root of 86. See A011077
4th root of 87. See A011078
4th root of 88. See A011079
4th root of 89. See A011080
4th root of 90. See A011081
4th root of 91. See A011082
4th root of 92. See A011083
4th root of 93. See A011084
4th root of 94. See A011085
4th root of 95. See A011086
4th root of 96. See A011087
4th root of 97. See A011088
4th root of 98. See A011089
4th root of 99. See A011090
4th Stieltjes constant gamma_4. See A086281
4^(1/Pi). See A117191
4^(4^(4^4)) = 4^^4. See A241293
4^4^4. See A214024
4^5 * Sum_{n>=0} 1/4^(2^n). See A160387
4^n contains no pair of consecutive equal digits (probably finite). See A050725
4^n contains no zeros (probably finite). See A030701
4^Pi. See A260634
5 * sqrt(7). See A242703
5 + sqrt(35). See A090656
5 Pi^2/96. See A096615
5*Pi. See A019669
5+3*sqrt(3). See A176532
5+sqrt(26). See A176537
5+sqrt(30). See A176529
5-2*sqrt(5)+sqrt(25-10*sqrt(5))-sqrt(5-2*sqrt(5)). See A277390
5/(2*sqrt(5+2*sqrt(5))), area of regular pentagram with base edge length 1. See A179050
5/(3*phi^2) where phi is the golden ratio. See A227400
5/24. See A212832
5/9. See A010716
5/e. See A135005
50020080020/9009009009. See A181668
50th root of 50. See A011469
51st root of 51. See A011470
5287/30303. See A153349
52nd root of 52. See A011471
538853870/3333333333. See A070514
53rd root of 53. See A011472
54588823/333333333 = 0.repeat(163766469). See A251780
54th root of 54. See A011473
55th root of 55. See A011474
56/13, the Korn constant for the sphere. See A244346
56th root of 56. See A011475
57th root of 57. See A011476
58th root of 58. See A011477
59th root of 59. See A011478
5Pi/6. See A019679
5th Du Bois Reymond constant. See A243108
5th root of 10. See A011095
5th root of 11. See A011096
5th root of 12. See A011097
5th root of 13. See A011098
5th root of 14. See A011099
5th root of 15. See A011100
5th root of 16. See A011101
5th root of 17. See A011102
5th root of 18. See A011103
5th root of 19. See A011104
5th root of 20. See A011105
5th root of 21. See A011106
5th root of 22. See A011107
5th root of 23. See A011108
5th root of 24. See A011109
5th root of 25. See A011110
5th root of 26. See A011111
5th root of 27. See A011112
5th root of 28. See A011113
5th root of 29. See A011114
5th root of 30. See A011115
5th root of 31. See A011116
5th root of 33. See A011118
5th root of 34. See A011119
5th root of 35. See A011120
5th root of 36. See A011121
5th root of 37. See A011122
5th root of 38. See A011123
5th root of 39. See A011124
5th root of 40. See A011125
5th root of 41. See A011126
5th root of 42. See A011127
5th root of 43. See A011128
5th root of 44. See A011129
5th root of 45. See A011130
5th root of 46. See A011131
5th root of 47. See A011132
5th root of 48. See A011133
5th root of 49. See A011134
5th root of 50. See A011135
5th root of 51. See A011136
5th root of 52. See A011137
5th root of 53. See A011138
5th root of 54. See A011139
5th root of 55. See A011140
5th root of 56. See A011141
5th root of 57. See A011142
5th root of 58. See A011143
5th root of 59. See A011144
5th root of 6. See A011091
5th root of 60. See A011145
5th root of 61. See A011146
5th root of 62. See A011147
5th root of 63. See A011148
5th root of 64. See A011149
5th root of 65. See A011150
5th root of 66. See A011151
5th root of 67. See A011152
5th root of 68. See A011153
5th root of 69. See A011154
5th root of 7. See A011092
5th root of 70. See A011155
5th root of 71. See A011156
5th root of 72. See A011157
5th root of 73. See A011158
5th root of 74. See A011159
5th root of 75. See A011160
5th root of 76. See A011161
5th root of 77. See A011162
5th root of 78. See A011163
5th root of 79. See A011164
5th root of 8. See A011093
5th root of 80. See A011165
5th root of 81. See A011166
5th root of 82. See A011167
5th root of 83. See A011168
5th root of 84. See A011169
5th root of 85. See A011170
5th root of 86. See A011171
5th root of 87. See A011172
5th root of 88. See A011173
5th root of 89. See A011174
5th root of 9. See A011094
5th root of 90. See A011175
5th root of 91. See A011176
5th root of 92. See A011177
5th root of 93. See A011178
5th root of 94. See A011179
5th root of 95. See A011180
5th root of 96. See A011181
5th root of 97. See A011182
5th root of 98. See A011183
5th root of 99. See A011184
5th Stieltjes constant gamma_5. See A086282
5^(1/2) - 7^(1/3). See A236027
5^(5^(5^5)) = 5^^4. See A241294
5^n contains no pair of consecutive equal digits (probably finite). See A050726
5^Pi. See A260635
6*(phi+1)/5, where phi is (1 + sqrt(5))/2. See A180251
6*arcsec(sqrt(3))/Pi^(3/2), an extreme value constant. See A243448
6*K/Pi^2, a constant related to the asymptotic evaluation of the number of positive squarefree integers of the form a^2 + b^2, where K is the Landau-Ramanujan constant. See A243371
6*log(A) - 1/2 - 2*log(2)/3, where A is the Glaisher-Kinkelin constant (A074962). See A193547
6*Pi. See A228719
6/(Catalan*Pi^2). See A088454
6/(Pi^2 A086724). See A088467
6/e. See A135006
6/Pi. See A132696
6/Pi^2. See A059956
6/sqrt(sqrt(3)). See A268604
60th root of 60. See A011479
61/99. See A176355
61st root of 61. See A011480
62nd root of 62. See A011481
630/Pi^6. See A157295
63rd root of 63. See A011482
64/169, the upper bound (as given by S. Finch) of the 2-dimensional simultaneous Diophantine approximation constant. See A244334
64th root of 64. See A011483
65th root of 65. See A011484
66th root of 66. See A011485
6733370/111111111. See A158090
67th root of 67. See A011486
68/99. See A010724
68th root of 68. See A011487
69th root of 69. See A011488
6th Du Bois Reymond constant. See A245333
6th root of 10. See A011275
6th root of 11. See A011290
6th root of 12. See A011305
6th root of 13. See A011320
6th root of 14. See A011335
6th root of 15. See A011350
6th root of 17. See A011380
6th root of 18. See A011395
6th root of 19. See A011410
6th root of 2. See A010768
6th root of 20. See A011425
6th root of 5. See A011200
6th root of 6. See A011215
6th root of 7. See A011230
6th Stieltjes constant, negated. See A183141
6^(1/sqrt(6)). See A243444
6^(6^(6^6)) = 6^^4. See A241295
6^5/(Pi^2). See A233778
6^n contains no pair of consecutive equal digits (probably finite). See A050727
6^n contains no zeros (probably finite). See A030702

### Start of section 7

7 + 2021/3003. See A239341
7*Pi. See A228721
7*sqrt(3)/2. See A097715
7+2*sqrt(2). See A157258
7-2*sqrt(2). See A157259
7/2 - sqrt(2)/4. See A100954
7/2. See A152624
7/3. See A157532
7/6. See A177057
7/9. See A010727
7/e. See A135007
7/Pi. See A132697
70th root of 70. See A011489
71/99. See A176415
71st root of 71. See A011490
72nd root of 72. See A011491
73rd root of 73. See A011492
74th root of 74. See A011493
75th root of 75. See A011494
76th root of 76. See A011495
77th root of 77. See A011496
78th root of 78. See A011497
79th root of 79. See A011498
7th root of 10. See A011276
7th root of 11. See A011291
7th root of 12. See A011306
7th root of 13. See A011321
7th root of 14. See A011336
7th root of 15. See A011351
7th root of 16. See A011366
7th root of 17. See A011381
7th root of 18. See A011396
7th root of 19. See A011411
7th root of 2. See A010769
7th root of 20. See A011426
7th root of 4. See A011186
7th root of 5. See A011201
7th root of 6. See A011216
7th root of 7. See A011231
7th root of 8. See A011246
7th root of 9. See A011261
7th Stieltjes constant, negated. See A183167
7^(1/4) - 5^(1/4). See A234522
7^(1/sqrt(7)). See A243443
7^(7^(7^7)) = 7^^4. See A241296
7^3/6^3. See A177056
7^n contains no pair of consecutive equal digits (probably finite). See A050728
7^n contains no zeros (probably finite). See A030703
8*Pi*5^(1/2). See A195823
8*Pi*G/c^4, where G is the Newtonian constant of gravitation and c = 299792458 m/s is the speed of light in vacuum. See A228819
8*Pi. See A228824
8*Pi/F_P, where F_P is the Planck force. See A228819
8*Pi^2/15. See A164103
8*Pi^2/3. See A164104
8*Pi^4/(21*zeta(3)). See A107370
8*Pi^4/729. See A196751
8*Pi^6/27. See A151928
8*sin(Pi/8). See A280585
8*sum_{m,n,p = -infinity..infinity} (-1)^(m+n+p)/ sqrt( (2*m-0.5)^2+(2*n-0.5)^2+(2*p-0.5)^2 ). See A185581
8/105. See A118321
8/e. See A135008
8/Pi. See A132698
8/Pi^2. See A217739
8/sqrt(15). See A140247
80th root of 80. See A011499
81*sqrt(3)/(8*Pi^3). See A127205
81st root of 81. See A011500
82848614/333333333 or the continued fraction rep. of (252629+sqrt(142904412730))/281217. See A146079
82nd root of 82. See A011501
83rd root of 83. See A011502
84446888 (see A129106). See A129105
84th root of 84. See A011503
85th root of 85. See A011504
86/333. See A131598
8642/99999. See A177154
86th root of 86. See A011505
87th root of 87. See A011506
88th root of 88. See A011507
89th root of 89. See A011508
8th root of 10. See A011277
8th root of 11. See A011292
8th root of 12. See A011307
8th root of 13. See A011322
8th root of 14. See A011337
8th root of 15. See A011352
8th root of 17. See A011382
8th root of 18. See A011397
8th root of 19. See A011412
8th root of 2. See A010770
8th root of 20. See A011427
8th root of 5. See A011202
8th root of 6. See A011217
8th root of 7. See A011232
8th root of 8. See A011247
8th Stieltjes constant, negated. See A183206
8^(1/sqrt(8)). See A243406
8^(8^(8^8)) = 8^^4. See A241297
8^n contains no pair of consecutive equal digits (probably finite). See A050729
9 - 12*log(2). See A075549
9*Pi. See A229939
9*Pi/10. See A229939
9*sqrt(3)/4, the area of an equilateral triangle of side length 3. See A179047
9*Sum{k=1..inf} 1/(10^k-1). See A065444
9*zeta(3)/(Pi^2*log(2)). See A275688
9/(2*Pi^2). See A088245
9/e. See A135009
9/Pi. See A132699
90/Pi^4. See A215267
9091/9901. See A182494
9099999999923/27500000000000. See A169670
90th root of 90. See A011509
9192631770 (a second is defined to be exactly 9192631770 periods of the resonance frequency of the cesium 133 atom). See A230458
91st root of 91. See A011510
92696389/111111111. See A145594
92nd root of 92. See A011511
93rd root of 93. See A011512
94th root of 94. See A011513
95th root of 95. See A011514
96th root of 96. See A011515
97/150 + Pi/40. See A093072
97169/111111. See A154815
973936900/111111111. See A141726
97th root of 97. See A011516
98th root of 98. See A011517
998998998998998998998998998/9. See A114054
999/9801. See A137301
99999/9801. See A137302
9999999/9801. See A137303
999999999/9801. See A137304
99th root of 99. See A011518
9th root of 10. See A011278
9th root of 11. See A011293
9th root of 12. See A011308
9th root of 13. See A011323
9th root of 14. See A011338
9th root of 15. See A011353
9th root of 16. See A011368
9th root of 17. See A011383
9th root of 18. See A011398
9th root of 19. See A011413
9th root of 2. See A010771
9th root of 20. See A011428
9th root of 4. See A011188
9th root of 5. See A011203
9th root of 6. See A011218
9th root of 7. See A011233
9th root of 9. See A011263
9th Stieltjes constant, negated. See A184853
9^(9^(9^9)) = 9^^4. See A243913
9^(9^9) = 9^^3. See A241298
9^n contains no pair of consecutive equal digits (probably finite). See A050730

### Start of section A

a 5-dimensional analog of DeVicci's tesseract constant. See A243313
a = f(1) = f(2) with function f(x) from A109087. See A109089
A = Gamma(1/3)*(e/9)^(1/3). See A108743
a = prod[from n = 1 to infinity] (semiprime(n)^2 - 1)/(semiprime(n)^2 + 1) = prod[from n = 1 to infinity] (A001358(n)^2 - 1)/(A001358(n)^2 + 1). See A112407
a certain constant (see Comments lines for definition). See A117759
a certain constant U (see A135096 for further information). See A135097
a close approximation to the Ramanujan constant. See A102912
a coefficient associated with the asymptotics of the average distance between a vertex and the root of a random rooted tree. See A245652
a coefficient associated with the asymptotics of the variance of the distance between a vertex and the root of a random rooted tree. See A245653
a constant 'v' such that the asymptotic variance of the distribution of the longest cycle given a random n-permutation evaluates as v*n^2. See A247398
a constant appearing in a theorem by Árpád Baricz about Mills' ratio of the standard normal distribution. See A245967
a constant appearing in the expression of the asymptotic expected volume V(d) of the convex hull of uniformly selected n(d) points in the interior of a d-dimensional unit cube. See A249456
a constant appearing in the Hankel determinant asymptotics. See A249185
a constant appearing in the solution of Polya's 2D drunkard problem. See A185280
a constant associated with fundamental discriminants and Dirichlet characters. See A249272
a constant associated with self-generating continued fractions and Cahen's constant. See A242724
a constant associated with the set of all complex nonprincipal Dirichlet characters. See A249273
a constant associated with the set of all complex primitive Dirichlet characters. See A249274
a constant in the linear term in the growth rate of unitary squarefree divisors. See A161166
a constant linked to a normal distribution inequality. See A240723
a constant related to a certain Sobolev isoperimetric inequality. See A242440
a constant related to A000151. See A245870
a constant related to A000294. See A255939
a constant related to A000620, A000622, A000623 and A000625. See A239803
a constant related to A000620. See A239805
a constant related to A000621 and A000624. See A239804
a constant related to A000621. See A239806
a constant related to A000622. See A239807
a constant related to A000623. See A239808
a constant related to A000624. See A239809
a constant related to A000625. See A239810
a constant related to A001056. See A258112
a constant related to A002465. See A238258
a constant related to A006196. See A247448
a constant related to A007563. See A245566
a constant related to A007660. See A258113
a constant related to A034691. See A247003
a constant related to A048285. See A239528
a constant related to A055887. See A246828
a constant related to A060984. See A237888
a constant related to A060985. See A237889
a constant related to A063902 and A258662. See A258895
a constant related to A074141. See A256155
a constant related to A086714. See A251794
a constant related to A088716. See A238223
a constant related to A094926. See A258639
a constant related to A107379. See A258234
a constant related to A143917. See A238214
a constant related to A152686. See A253267
a constant related to A173938. See A246041
a constant related to A177385. See A249748
a constant related to A187235. See A238261
a constant related to A206226. See A258268
a constant related to A232899. See A245758
a constant related to A246040. See A260932
a constant related to A251702. See A251792
a constant related to A253268. See A253270
a constant related to A255322. See A255504
a constant related to A255358. See A255511
a constant related to A255359. See A255438
a constant related to A255360. See A255439
a constant related to A258399, A258426 and A258499. See A256254
a constant related to A258941. See A258942
a constant related to A259373. See A259405
a constant related to A262876 and A262946 (negated). See A263030
a constant related to A262877 and A262947 (negated). See A263031
a constant related to A263136 (negated). See A263176
a constant related to A263137. See A263177
a constant related to A263141 (negated). See A263178
a constant related to A263142 (negated). See A263179
a constant related to A263143 (negated). See A263180
a constant related to A263144. See A263181
a constant related to asymptotic behavior of super-roots of 2: lim_{n->inf} (sr[n](2) - sqrt(2))/log(2)^n. See A260691
a constant related to Carlitz compositions (A003242). See A241902
a constant related to identity matched trees. See A246312
a constant related to identity trees. See A246169
a constant related to Niven numbers. See A086705
a constant related to Niven's constant. See A242972
a constant related to series-reduced trees. See A246403
a constant related to the asymptotic evaluation of prod_(p prime congruent to 1 modulo 4) (1 + 1/p). See A243377
a constant related to the asymptotic evaluation of prod_(p prime congruent to 3 modulo 4) (1 + 1/p). See A243378
a constant related to the asymptotic evaluation of the Lebesgue constants L_n. See A243278
a constant related to the asymptotic expansion of the Lebesgue constant corresponding to the n-th Chebyshev polynomial. See A243257
a constant related to the asymptotic expansion of the smallest Lebesgue constant corresponding to an optimal interpolation data set. See A243258
a constant related to the asymptotics of A008485. See A270915
a constant related to the asymptotics of A032302. See A266576
a constant related to the asymptotics of A137891. See A270047
a constant related to the asymptotics of A204249. See A278300
a constant related to the asymptotics of A270913. See A270914
a constant related to the Barnes G-function. See A255674
a constant related to the expected number of vertices of the largest tree associated with a random mapping on n symbols. See A271871
a constant related to the postulated upper estimate for the complex Grothendieck constant. See A088373
a constant related to the variance of the number of vertices of the largest tree associated with a random mapping on n symbols. See A271948
a constant related to the [dimensionless] electrical capacitance of the ring torus without hole (with unit circle radius). See A249220
a constant relating to the density of Fibonacci integers. See A275976
a constant that appears in flux/diffusion problems with trapping surfaces. See A160439
a constant x such that the n-th partial quotient of the continued fraction of x equals floor(2^n*x), for n>=0. See A093054
a constant x with the property that when x is added to each of the partial quotients of the continued fraction of x, the resulting continued fraction has a value of 1. See A092235
A devil's staircase constant: decimal expansion of the sums involving powers of 2 and Beatty sequences given by: c = Sum_{n>=1} 1/2^[log_2(e^n)] = Sum_{n>=1} [log(2^n)]/2^n. See A121472
A devil's staircase constant: decimal expansion of the sums involving powers of 2 and Beatty sequences given by: c = Sum_{n>=1} [log_2(e^n)]/2^n = Sum_{n>=1} 1/2^[log(2^n)]. See A121474
a doubly infinite sum involving harmonic numbers. Curiously, this sum is very close to 1. See A274031
a function approximation constant which is the analog of Gibbs' constant 2G/Pi (A036793) for de la Vallée-Poussin sums. See A272335
a limit associated with the asymptotic number of ways of writing a number as a sum of powers of 2, with each power used at most twice (cardinality of "alternating bit sets" of a given number, also known as Stern's diatomic sequence). See A246765
a lower bound of the area of a convex universal cover for a unit length curve. See A140087
a minimum of Arias de Reyna and van de Lune's kappa function. See A225962
a multiplicative constant related to A002465. See A238260
a multiplicative constant related to A006196. See A247449
a multiplicative constant related to A187235. See A238262
a nested radical: CubeRoot(1 + CubeRoot(2 + CubeRoot(3 + CubeRoot(4 + ... See A099874
a nested radical: Sqrt(1 + CubeRoot(2 + 4thRoot(3 + 5thRoot(4 + ... See A099878
a nested radical: sqrt(1! + sqrt(2! + sqrt(3! + ... See A099876
a nested radical: sqrt(1^2 + sqrt(2^2 + sqrt(3^2 + ... See A099879
a non-holonomic random walk constant. See A125681
a number close to 24, related to the Ramanujan number e^(Pi*sqrt(163)). See A266296
a number x such that adding exp(1) to each of the partial quotients of the continued fraction of x evaluates to x+2. See A087044
a number x such that adding Pi to each of the partial quotients of the continued fraction of x evaluates to x+3. See A087042
a parking constant related to the asymptotic expected number of cars, assuming random car lengths. See A243266
a partial sum limiting constant related to the Lüroth representation of real numbers. See A244109
a postulated upper estimate for the complex Grothendieck constant. See A088374
a postulated upper estimate for the complex Grothendieck constant. See A088375
a second variant of the Komornik-Loreti constant. See A248853
a semiprime analog of a Ramanujan formula. See A112407
a Shapiro-Drinfeld constant related to the difference of cyclic sums (negated). See A243261
a single magnetic flux quantum in SI units. See A248507
a solution to 1/(x^(1/(x+1))-1)-x. The other solution is 1. See A144211
A such that y = A*x^2 cuts the first quadrant of the unit circle into two equal areas. See A255913
A such that y = A*x^2 cuts the triangle with vertices (0,0), (1,0), (0,1) into two equal areas. See A255941
a variant of the Komornik-Loreti constant. See A248852
a Young-Fejér-Jackson constant linked to the nonnegativity of certain cosine sums. See A227422
a(F_5), the maximum inradius of all triangles that lie in a regular pentagon of width 1. See A247554
A(rectangles), an analog of Moser's worm constant, which is associated with the class of rectangular regions of the plane. See A247553
A, a constant related to one of Arnold's problems: measuring the randomness of modular arithmetic progressions. See A257102
A060295/24. See A181045
A060295^2. See A166528
A060295^3 See A166529
A060295^5. See A166531
A060295^6. See A166532
A064582*sqrt(3)/2, i.e., imaginary part of omega_1 in the equianharmonic case. See A094962
A064582/2, i.e., real part of omega_1 in the equianharmonic case. See A094961
A1*B1, the average number of non-isomorphic semisimple rings of any order, where A1 is Product_{m>1} zeta(m) and B1 is Product_{r*m^2 > 1} zeta(r*m^2). See A244285
a1, the first of two constants associated with Djokovic's conjecture on an integral inequality. See A245279
A143731 interpreted as a binary fraction. See A143735
A144101 interpreted as a binary fraction. See A144102
A169624/8 See A181163
A194158(n) = prod(i=1..n, F(2*i-1) ) is asymptotic to C1*phi^(n*n)/sqrt(5)^n where phi=(1+sqrt(5))/2 and F(n) = A000045(n). the constant C1 is given here. See A194160
a2, the second of two constants associated with Djokovic's conjecture on an integral inequality. See A245280
abs(i/(i + i/(i + i/...))) and abs(i/(1 + i/(1 + i/...))), i being the imaginary unit. See A257945
abs(LambertW(-1)). See A238274
abs(log(cosine of 1 degree)). See A111716
abs(log(sine of 1 radian)). See A117029
abs(log(tan(1 degree)))). See A111767
abs(log_10(cosine of 1 degree)). See A111719
abs(log_10(sine of 1 radian)). See A117028
abs(log_10(tan 1 degree)). See A111769
abscissa of the half width of the Airy function. See A221210
abscissa x of a local maximum of the Fibonacci function F(x). See A172197
abscissa x of a local minimum of the Fibonacci Function F(x). See A171909
absolute abnormal number derived from A220189. See A220190
absolute minimum of cos(t) + cos(2t) + cos(3t). See A196361
absolute minimum of cos(x)+cos(2x)+cos(3x)+cos(4x)+cos(5x)+cos(6x). See A198675
absolute minimum of cos(x)+cos(2x)+cos(3x)+cos(4x)+cos(5x). See A198673
absolute minimum of cos(x)+cos(2x)+cos(3x)+cos(4x). See A198671
absolute minimum of f(x)+f(2x)+f(3x)+f(4x)+f(5x)+f(6x), where f(x)=sin(x)+cos(x). See A198743
absolute minimum of f(x)+f(2x)+f(3x)+f(4x)+f(5x)+f(6x), where f(x)=sin(x)-cos(x). See A198753
absolute minimum of f(x)+f(2x)+f(3x)+f(4x)+f(5x), where f(x)=sin(x)+cos(x). See A198741
absolute minimum of f(x)+f(2x)+f(3x)+f(4x)+f(5x), where f(x)=sin(x)-cos(x). See A198751
absolute minimum of f(x)+f(2x)+f(3x)+f(4x), where f(x)=sin(x)+cos(x). See A198739
absolute minimum of f(x)+f(2x)+f(3x)+f(4x), where f(x)=sin(x)-cos(x). See A198749
absolute minimum of f(x)+f(2x)+f(3x), where f(x)=sin(x)+cos(x). See A198737
absolute minimum of f(x)+f(2x)+f(3x), where f(x)=sin(x)-cos(x). See A198747
absolute minimum of f(x)+f(2x), where f(x)=sin(x)+cos(x). See A198735
absolute minimum of f(x)+f(2x), where f(x)=sin(x)-cos(x). See A198745
absolute minimum of sin(x)+sin(2x)+sin(3x)+sin(4x)+sin(5x)+sin(6x). See A198733
absolute minimum of sin(x)+sin(2x)+sin(3x)+sin(4x)+sin(5x). See A198731
absolute minimum of sin(x)+sin(2x)+sin(3x)+sin(4x). See A198729
absolute minimum of sin(x)+sin(2x)+sin(3x). See A198679
absolute minimum of sin(x)+sin(2x). See A198677
absolute minimum of sinc(x) = sin(x)/x (negated). See A213053
absolute value of i!. See A212879
absolute value of infinite power tower of i. See A212479
absolute value of limit_{N -> infinity} Integral_{x=1..2*N} e^(i Pi x)*x^(1/x). See A157852
absolute value of sum_{k>=1} (-1)^k/(k*binomial(3k,k)). See A229704
absolute value of sum_{k>=1} (-1)^k/(k*binomial(4k,k)). See A229703
absolute value of Sum_{n=0..inf}(1/c_n), c_0=1, c_n=c_(n-1)*(n+I). See A231534
absolute value of sum_{n>=1} (-1)^n*sin(1/n). See A233383
absolute value of the abscissa of the local maximum of the Gamma function in the interval [ -1,0] See A175472
absolute value of the abscissa of the local maximum of the Gamma function in the interval [ -3,-2]. See A175474
absolute value of the abscissa of the local minimum of the Gamma function in the interval [ -2,-1]. See A175473
absolute value of the imaginary part of i^(e^Pi), where i = sqrt(-1). See A194554
absolute value of the imaginary part of li(-1). See A257820
absolute value of the imaginary part of li(-A257821). See A257822
absolute value of the imaginary part of the two complex roots of x^3-x^2+1. See A210463
absolute value of the integral of sin(Pi*x)*log(x)/x^2 from x=1 to infinity. See A175296
absolute value of the larger solution of (n^2+n)/2 = -1/12. (Real root q of 6n^2 + 6n + 1; the other root being p=-1-q). See A156309
absolute value of zeta(2), the third derivative of the Riemann zeta function at 2. See A201995
absolute value of zeta(1/3). See A251734
According to van de Lune, Erdős observed that 2^6 = 64 and 2^10 = 1024 were two examples where the decimal expansion of 2^n starts with that of n. At that time no other examples were known. Jan van de Lune computed the first 6 terms in 1978. See A100129
accumulation point of the logistic map. See A098587
acos(2/Pi). See A275477
agm(1, 2). See A068521
AGM(1, sqrt(2))^2/Pi. See A275322
AGM(1,i)/(1+i). See A076390
AGM(1,sqrt(2)). See A053004
AGM(1-x,1+x), where x=1/(10^27+1). See A181693
AGM(sqrt(2), sqrt(3)). See A230461
Ai(0), where Ai is the Airy function of the first kind. See A284867
algebraic integer 2*cos(Pi/34) of degree 16 = A055034(34) (over the rationals), the length ratio (smallest diagonal)/side of a regular 34-gon. See A228788
alpha particle mass equivalent in J. See A254154
alpha particle mass equivalent in MeV. See A254155
alpha particle mass in kg. See A254153
alpha particle mass in u. See A254156
alpha particle-proton mass ratio. See A254158
alpha(2) = Sum_{i>0}ithprime(i)*2^(-i^2). See A060388
alpha, the unique solution on [2,oo) of the equation alpha*log((2*e)/alpha)=1. See A195596
alpha_GW, a constant arising in Max Cut algorithm of Goemans and Williamson. See A203914
Also 10 times the decimal expansion of the Fresnel integrals int_{x=0..infinity} x*sin(x^4) dx = int_{x=0..infinity} x*cos(x^4) dx. See A143149
Also the continued fractions of (13475+sqrt(212576401))/8952 and the decimal expansion of 414016720/111111111. See A142069
Also, 2 - sqrt(3) = cotangent of 75 degrees. An equivalent definition of this sequence: decimal expansion of x < 1 satisfying x^2 - 4*x + 1 = 0. See A019913
Also, the decimal expansion of sum(n >= 0) 1/(10^n)^n. See A010052
Also: decimal expansion of the constant 309541367/1111111111. See A141721
alternating double sum U(3,1) = sum_{i>=2} (sum_{j=1..i-1} (-1)^(i+j)/(i^3*j)) (negated). See A255685
alternating sum 1/p(1) + 1/(p(2)*p(3)) - 1/(p(4)*p(5)*p(6)) + 1/(p(7)*p(8)*p(9)*p(10)) - ..., where p(n) is the n-th prime. See A139396
alternating sum 1/p(1) - 1/(p(2)*p(3)) + 1/(p(4)*p(5)*p(6)) - 1/(p(7)*p(8)*p(9)*p(10)) + ..., where p(n) is the n-th prime. See A238234
Ampersand curve length. See A193670
amplitude of a simple pendulum the period of which is twice the period in the small-amplitude approximation. See A256514
an "almost Pi" BBP type solution in base 24: the sum of (21/(6 n + 1) + 15/(12 n + 1) - 9/(12 n + 5) + 30/(12 n + 7) - 1/(4 n + 1))/(12 * 24^n) over all n >= 0. See A152042
an "almost" BBP type solution in base 20: a=Sum[(1/20^n)*(4/(10*n + 1) + (-2)/(10*n + 2) + (-3)/(10*n + 7) + 5/(10*n + 9)), {n, 0, Infinity}]. See A152040
an ellipsoidal cap height, the cap volume being 1/3 of the ellipsoid volume. See A220052
An equivalent definition of this sequence: decimal expansion of x > 1 satisfying x^2 - 4*x + 1 = 0. See A019973
an infinite product involving the ratio of n! to its Stirling approximation. See A241140
an infinite product involving the ratio of n! to its Stirling approximation. See A272097
an Ising constant related to the hexagonal lattice. See A242969
an Ising constant related to the random coloring problem. See A242743
an Ising constant related to the triangular lattice. See A242968
an i^i, namely exp(3 pi / 2). See A101748
an optimal stopping constant related to the Secretary problem. See A242672
analog of Lévy's constant in case of the nearest integer continued fraction of -1/2<x<1/2. See A247039
analog of the Gibbs-Wilbraham constant for L_1 trigonometric polynomial approximation. See A245535
analog of the Mertens constant B_2 in the asymptotic series for the variance of the number of prime factors Omega. See A091589
angle (in degrees) between an edge and (the normal of) a face of the regular tetrahedron. See A210974
angle B in the doubly e-ratio triangle ABC. See A188544
angle B in the doubly golden triangle ABC. See A152149
angle B in the doubly silver triangle ABC. See A188543
angle B of unique side-golden and angle-silver triangle. See A188616
angle B of unique side-silver and angle-golden triangle. See A188617
angular velocity of the Earth of the World Geodetic System 1984 Ellipsoid, second upgrade. See A125126
Apart from first term, this is also the decimal expansion of 4/27. Example: 0.148148148148148... See A021679
apparent (see Comments) limit of the sum of the alternating series 1/prime(1) - 2/prime(2) + 3/prime(3) - 4/prime(4) + ... See A276524
arc length of an ellipse with semi-major axis 1 and excentricity sin(Pi/12), an arc length which evaluates without using elliptic integrals (a computation due to Ramanujan). See A274014
arc length of eight curve. See A118178
arc length of Freeth's nephroid. See A138498
arc length of Sylvester's Bicorn curve. See A228764
arc length of the (first) butterfly curve. See A118811
arc length of the bifoliate. See A118289
arc length of the bifolium. See A118307
arc length of the cornoid curve. See A141108
arc length of the cycloid of Ceva. See A138497
arc length of the Keratoid Cusp curve (loop arc length). See A204619
arc length of the quadrifolium. See A138500
arc length of the sine or cosine curve for one full period. See A105419
arccos((1/2)^(1/3)). See A195713
arccos((1/2)^(2/3)). See A195717
arccos(-(1/2)^(1/3)). See A195715
arccos(-(1/2)^(2/3)). See A195719
arccos(-1/4). See A140244
arccos(-1/r), where r=(1+sqrt(5))/2 (the golden ratio) See A195694
arccos(-sqrt(1/3)). See A195698
arccos(-sqrt(1/6)). See A195722
arccos(-sqrt(1/8)). See A195704
arccos(-sqrt(2/3)). See A195702
arccos(-sqrt(2/5)). See A195710
arccos(-sqrt(3/8)). See A195706
arccos(-sqrt(5/6)). See A195726
arccos(-sqrt(5/8)). See A195711
arccos(1-8/(Pi^2)) / (2*Pi). See A120671
arccos(1-8/(Pi^2)). See A120669
arccos(1/3). See A137914
arccos(1/phi), where phi=(1+sqrt(5))/2 (the golden ratio) See A195692
arccos(11/16). See A140242
arccos(2/3). See A228496
arccos(4/5). See A235509
arccos(7/8). See A140240
arccos(sqrt(1/3)) and of arcsin(sqrt(2/3)) and arctan(sqrt(2)). See A195696
arccos(sqrt(1/6)) and of arcsin(sqrt(5/6)) and arctan(sqrt(5)). See A195720
arccos(sqrt(2/5)) and of arcsin(sqrt(3/5)). See A195708
arccos(sqrt(3/8) and of arcsin(sqrt(5/8)). See A195703
arccosh(sqrt(2)), the inflection point of sech(x). See A091648
arccot(10). See A195790
arccot(4). See A195727
arccot(6). See A195774
arccot(8). See A195782
arccot(9). See A195786
arccsc(10). See A195792
arccsc(4). See A195621
arccsc(6). See A195776
arccsc(7). See A195780
arccsc(8). See A195784
arccsc(9). See A195788
arccsch(2)/log(10). See A097348
arcsec(10). See A195791
arcsec(3)/(2*Pi). See A289505
arcsec(4). See A195731
arcsec(5). See A195771
arcsec(6). See A195775
arcsec(7). See A195779
arcsec(8). See A195783
arcsec(9). See A195787
arcsin(((1/2)^(1/3)). See A195712
arcsin((1/2)^(2/3)). See A195716
arcsin(1/e). See A105735
arcsin(sqrt(1/3)) and of arccos(sqrt(2/3)). See A195695
arcsin(sqrt(1/8)) and of arccos(sqrt(7,8)). See A195699
arcsin(sqrt(3/8)) and of arccos(sqrt(5/8)). See A195700
arcsinh(1/3). See A129187
arcsinh(1/4). See A129200
arcsinh(1/5). See A129269
arcsin[sqrt[1-(e/Pi)^2] (in deg), lesser angle in right-angled triangle with hypotenuse Pi and larger leg e. See A106153
arctan 1/239. See A105534
arctan 1/3. See A105531
arctan 1/5. See A105532
arctan 1/7. See A105533
arctan of 1/Pi. See A232272
arctan of 2/Pi. See A232247
arctan of Pi. See A232273
arctan of Pi/2. See A232182
arctan( 1/(2*Pi) ): opposite angle for a right triangle of equal area to a circle. See A233527
arctan((1/2)^(1/3)). See A195714
arctan((1/2)^(2/3)). See A195718
arctan(1/2)/Pi. See A086203
arctan(1/r), where r=(1+sqrt(5))/2 (the golden ratio). See A195693
arctan(10). See A195789
arctan(1000000). See A195793
arctan(10^50). See A085679
arctan(2). See A105199
arctan(2*Pi): adjacent angle for a right triangle of equal area to a disk. See A233528
arctan(3). See A195729
arctan(3*sqrt(15)/29). See A140272
arctan(4). See A195628
arctan(5). See A195769
arctan(6). See A195773
arctan(7). See A195777
arctan(8). See A195781
arctan(9). See A195785
arctan(golden ratio). See A195723
arctan(sqrt(1/3)). See A019673
arctan(sqrt(1/6)). See A195721
arctan(sqrt(10)). See A195730
arctan(sqrt(12)). See A195724
arctan(sqrt(2/3)). See A195701
arctan(sqrt(2/5)). See A195709
arctan(sqrt(3/8)). See A195705
arctan(sqrt(5/6)). See A195725
arctan(sqrt(5/8)). See A195707
arctan(sqrt(6)). See A195728
arctan(sqrt(7)). See A168229
arctangent of 1/2. See A073000
arctanh(1/2) = arccoth(2) = integral_{x>2} 1/(x^2-1). See A156057
area bounded by x->Exp[x] and x->Gamma[x+1] on 0 <= x <= c, where c is the value given by A078335. See A119824
area bounded by x->x and x->Log[x! ] on 0 <= x <= c, where c is the value given by A078335. See A119858
area cut out by a rotating regular pentagon of width 1 inside a unit square. See A275967
area cut out by a rotating Reuleaux triangle. See A066666
area enclosed in the lens-shaped region of the Laplace Limit. See A140133
area K of cyclic pentagon with sides 2, 3, 5, 7, and 11. See A200113
area of a regular 11-gon with unit edge length. See A256854
area of a regular 9-gon with unit edge length. See A256853
area of a regular pentagon with unit edge length. See A102771
area of Duerer's approximation of a regular pentagon with each side of unit length. See A220674
area of Gerver's sofa. See A128463
area of Graham's biggest little hexagon. See A111969
area of home plate (USA major league baseball) in square inches. See A121403
area of Mandelbrot set. See A098403
area of the ampersand curve. See A101801
area of the fourth Mandelbrot set lemniscate See A194473
area of the largest rectangle under the normal curve. See A103647
area of the quartic curve with implicit cartesian equation x^4 + y^2 = 1 (sometimes named "elliptic lemniscate"). See A227717
area of the regular 10-gon (decagon) of circumradius = 1. See A258403
area of the regular 10-gon (decagon) of edge length 1. See A178816
area of the regular 12-gon (dodecagon) of edge length 1. See A178809
area of the regular 3-gon (triangle) of circumradius = 1. Note this is (1/2)*A104956. See A104954
area of the regular 5-gon (pentagon) of circumradius = 1. See A104955
area of the regular 7-gon (heptagon) of circumradius = 1. See A104957
area of the regular 7-gon (heptagon) of edge length 1. See A178817
area of the regular hexagon with circumradius 1. See A104956
area of the second Mandelbrot set lemniscate. See A193780
area of the surface generated by revolving about the y-axis that part of the curve y = log x lying in the 4th quadrant. See A103713
area of the surface generated by revolving one arch of the cosine curve about the x-axis. See A103714
area under the curve 1/Gamma(x) from zero to infinity. See A058655
area under the curve d^2/(Gamma(x) dx^2) from zero to infinity. See A245635
area under the curve Zeta(1/2 + t*I) from zero to its first nontrivial zero (A058303). See A084233
argument of -1 + 2*i. See A137218
argument of infinite power tower of i. See A212480
argument z in (0,Pi/2) for which the function log(cos(sin(x)))/log(sin(cos(x))) possesses the maximum in (0,Pi/2). See A168546
arithmetic-geometric mean (AGM) of 1/Pi and 1/e. See A108127
arithmetic-geometric mean of [1,4]. See A084896
Artin's constant product(1-1/(p^2-p), p=prime). See A005596
astronomical unit (measured in meters). See A163103
asymptotic constant eta for counts of weakly binary trees. See A086318
asymptotic constant in Goebel's sequence A003504. See A115632
asymptotic constant xi for counts of weakly binary trees. See A086317
asymptotic cost of the minimum edge cover in a complete bipartite graph with independent exponentially distributed edge costs. See A246823
asymptotic evaluation of the constrained maximum of a certain quadratic form. See A244257
asymptotic growth rate of the number of odd coefficients in Pascal "septinomial" triangle mod 2, where coefficients are from (1+x+...+x^5+x^6)^n. See A242048
asymptotic growth rate of the number of odd coefficients in Pascal "sextinomial" triangle mod 2, where coefficients are from (1+x+x^2+x^3+x^4+x^5)^n. See A242047
asymptotic growth rate of the number of odd coefficients in Pascal quintinomial triangle mod 2. See A242022
asymptotic growth rate of the number of odd coefficients in Pascal trinomial triangle mod 2, where coefficients are from (1+x+x^4)^n. See A241002
asymptotic growth rate of the number of odd coefficients in Pascal trinomial triangle mod 2. See A242021
asymptotic probability of success in one of the Secretary problems. See A242674
asymptotic probability of success in the full information version of the secretary problem. See A246668
asymptotic probability of success in the secretary problem when the number of applicants is uniformly distributed. See A246665
atan(1/e). See A258428
atan(e). See A257777
Atkinson-Negro-Santoro constant, a constant associated with Erdős' sum-distinct set constant. See A242729
atomic mass constant energy equivalent in J. See A254159
atomic mass constant energy equivalent in MeV. See A081813
atomic mass constant. See A081825
atomic unit of charge density in C m^-3. See A254244
atomic unit of current in A. See A254245
atomic unit of electric dipole moment in C m. See A254246
atomic unit of electric field gradient in V m^-2. See A254249
atomic unit of electric field in V m^-1. See A254247
atomic unit of electric polarizability in C^2 m^2 J^-1. See A254250
atomic unit of electric quadrupole moment in C m^2. See A254267
atomic unit of force in N. See A254268
atomic unit of Hartree energy in eV. See A254251
atomic unit of magnetic dipole moment in J T^-1. See A254270
atomic unit of magnetic flux density in T. See A254271
atomic unit of magnetizability in J T^-2. See A254272
atomic unit of momentum in kg m s^-1. See A254273
atomic unit of time in s. See A254179
atomic unit of velocity in m s^-1. See A254180
average "dropping time" of the reduced 3x+1 iteration. See A122791
average deviation of the total number of prime factors. See A083342
average distance traveled in three steps of length 1 for a random walk in the plane starting at the origin. See A240946
average length of a line segment picked at random in a unit 4-cube. See A103983
average length of a line segment picked at random in a unit 5-cube. See A103984
average length of a line segment picked at random in a unit 6-cube. See A103985
average length of a line segment picked at random in a unit 7-cube. See A103986
average length of a line segment picked at random in a unit 8-cube. See A103987
average of e^(1/e) and Pi. See A113554
average of two-digit primes. See A168608
average product of a side and an adjacent angle of a random Gaussian triangle in two dimensions. See A249542
average reciprocal distance between two points chosen at random in a unit square. See A254140
average reciprocal length of a line segment picked at random in a unit 4-cube. See A254149
average value of the Yekutieli-Mandelbrot parameter, that is the average number of maximal subtrees of an ordered binary tree requiring one less register than the whole tree. See A245250
A_0 (so named by S. Finch), a constant related to the asymptotic expression of the sum of the reciprocals of the number of abelian groups of a given order. See A272169
a_0, a constant related to a cylindrical random walk probability asymptotics. See A248878
A_3 = sum_{n >= 1} H(n)^2/((2n-1)*(2n)*(2n+1))^3, where H(n) is the n-th harmonic number. See A247669

### Start of section B

B (negated), a constant related to Glaisher's constant A and the Gaussian unitary ensemble hypothesis. See A243999
b = log(2*Pi)-1-Gamma/2. See A077142
B = Sum_{ n > 0 } 1/A007559(n). See A108744
b(1) in the sequence b(n+1) = c^(b(n)/n) A278448, where c=2 and b(1) is chosen such that the sequence neither explodes nor goes to 1. See A278808
b(1) in the sequence b(n+1) = c^(b(n)/n) A278449, where c=3 and b(1) is chosen such that the sequence neither explodes nor goes to 1. See A278809
b(1) in the sequence b(n+1) = c^(b(n)/n) A278450, where c=4 and b(1) is chosen such that the sequence neither explodes nor goes to 1. See A278810
b(1) in the sequence b(n+1) = c^(b(n)/n) A278451, where c=5 and b(1) is chosen such that the sequence neither explodes nor goes to 1. See A278811
b(1) in the sequence b(n+1) = c^(b(n)/n) A278452, where c = e = 2.71828... and b(1) is chosen such that the sequence neither explodes nor goes to 1. See A278812
B(16) = -3617/510, the 16th Bernoulli number. See A234355
B(18) = 43867/798, the 18th Bernoulli number. See A234356
B, a constant appearing in an asymptotic formula related to the exponential divisor function sigma^(e). See A275480
B, a constant appearing in the asymptotic number of integers the prime factorization of which has decreasing exponents. See A242051
B, a constant related to the Goh-Schmutz constant and the asymptotic expected order of a random permutation. See A244292
B, the coefficient of n*log(n)^2 in the asymptotic formula of Ramanujan for Sum_{k=1..n} (d(k)^2), where d(k) is the number of distinct divisors of k. See A245074
B. Davis' constant Pi^2/(8*G), a Riesz-Kolmogorov constant, where G is Catalan's constant. See A242822
Backhouse constant. See A072508
base x for which the double logarithm of 2 equals the natural log of 2, that is, log_x log_x 2 = log 2. See A181171
base-10 logarithm of the largest zero of Riemann's prime counting function R(x) (negated). See A143530
base-2 analog of the Euler-Mascheroni constant. See A100668
base-2 logarithm of Otter's rooted tree constant. See A274082
Bateman-Grosswald constant zeta(2/3)/zeta(2), a constant (negated) arising in the asymptotic evaluation of the number of square-full numbers (also called "powerful" numbers). See A244000
Baxter's four-coloring constant. See A224273
bean curve area. See A193505
bean curve length. See A193506
Bell number with index 1/2 calculated using Dobiński's formula. See A264806
Bernstein constant. See A073001
Bertrand's constant. See A079614
BesselI(0,2). See A070910
BesselI(1,2). See A096789
BesselI(3,2). See A261879
BesselJ(0,2). See A091681
BesselK(1,2)/BesselK(0,2). See A051148
best constant K for the integral inequality integral_{0..1} f(x)^2*f'(x)^2 dx <= K*integral_{0..1} f'(x)^4 dx. See A246859
best lower bound for the Steiner ratio rho_3, the least upper bound on the ratio of the length of the Steiner minimal tree to the length of the minimal tree in dimension 3. See A248411
best-known upper bound (as given by Julian Gevirtz) of the John constant for the unit disk. See A244382
beta = 1.07869..., the best constant in Friedrichs' inequality in one dimension. See A244263
beta = 3/(2*log(alpha/2)), where alpha = A195596. See A195599
beta = G^2*(2/3)*Product_{prime p == 3 (mod 4)} (1 - 2/(p*(p-1)^2)) (where G is Catalan's constant), a constant related to the problem of integral Apollonian circle packings. See A248938
beta'(0) : the derivative of the Dirichlet beta function evaluated at zero. See A113847
beta_0, a threshold constant [the existence or not of a giant component] associated with random graph theory in case of a power law distribution for the degree sequence. See A246847
bicuspid curve area. See A193625
bicuspid curve length. See A193626
bifurcation point B_3, the onset of an 8-cycle in the logistic equation. See A086181
binary sum Padovan(A000931) modulo two as in A011656(n). See A133358
binomial(Pi, e). See A093961
Bisecting a triangular cake using a curved cut of minimal length: decimal expansion of sqrt(Pi/sqrt(3))/2 = d/2, where d^2 = Pi/sqrt(3). See A093603
Bohr magneton in eV T^-1. See A254274
Bohr magneton in m^-1 T^-1. See A254275
Bohr N1 velocity constant : V_n1 = 2.187691415844453*10^6 (m/sec). See A081800
Boling's constant, the decimal expansion of Sum_{i>=1} i(i+1) / (2*Product_{j=0..i-1} i!/j!). See A107950
Boltzmann constant in Hz K^-1. See A252852
Boltzmann constant in m^-1 K^-1. See A254276
Boltzmann's constant in J K^-1. See A070063
Born's basic potential Pi_0. See A185576
Borwein integral with 8 sinc functions. See A221208
breadth of the "caliper", the broadest worm of unit length. See A240969
Brocard angle of side-golden right triangle. See A188595
Brocard angle of side-silver right triangle. See A188615
Brun's quadruple primes constant. See A213007
Buffon's constant 2/Pi. See A060294
Buffon's constant 3/Pi. See A089491
Burnside curve area. See A193719
Burnside curve length. See A193720
b^b^b^..., where b equals e-2 (A001113). See A221566
b^b^b^..., where b equals Pi-3 (A000796). See A237818
b_3, a constant associated with the 3rd Du Bois Reymond constant. See A245532
c = (1/9 + 1/25) + (1/25 + 1/49) + (1/121 + 1/169) + (1/289 + 1/361) + (1/841 + 1/961) + ... = 0.237251... See A160910
c = (7-sqrt(5))/2 = 2.3819660112501... See A079585
c = 0.372457801924938691.... Is c rational? See A064824
C = 1/(1+2/(1+3/(1+5/(1+6/(1+8/(1+9/(1+11/(1+. .)))))))). See A108745
c = 1/(2^(e^(-gamma))-1), a constant associated with the asymptotic convergent denominators of a continued fraction using Mersenne primes. See A247864
c = 2*Product_{prime p == 3 (mod 4)} (1 - 2/(p*(p-1)^2)), a constant related to the problem of integral Apollonian circle packings. See A248930
c = 2.4149..., a random mapping statistics constant such that the asymptotic expectation of the maximum rho length (graph diameter) in a random n-mapping is c*sqrt(n). See A244261
C = 2^(1/3)*e^(1/4)/A^3, a constant associated with the Gaudin-Mehta probability distribution and the Glaisher-Kinkelin constant A. See A247314
C = log(2*Pi) + B_3 (where B_3 is A083343), one of Euler totient constants. See A272030
C = Sum[ (-1)^(k+1) * 1/Prime[k]^Prime[k], {k,1,Infinity} ] = 1/2^2 - 1/3^3 + 1/5^5 - 1/7^7 + 1/11^11 - 1/13^13 + ... A122147[n] is a decimal expansion of C = 0.213281748700785698255627... See A122148
c = twice the maximum of Dawson's integral, a constant used in the asymptotic evaluation of the ideal hyperbolic n-cube volume. See A243433
c in the sequence b(n+1) = c^(b(n)/n) A278453, where b(1)=0 and c is chosen such that the sequence neither explodes nor goes to 1. See A278813
C(2), where C(x) = -Sum{k>=1} (-1)^k/p_k^x and p_k is the k-th prime. See A242301
C(3), where C(x) = -Sum{k>=1} (-1)^k/p_k^x and p_k is the k-th prime. See A242302
c(4), a constant appearing in certain Euler double sums not expressible in terms of well-known constants. See A247450
C(4), where C(x) = -Sum{k>=1} (-1)^k/p_k^x and p_k is the k-th prime. See A242303
C(5), where C(x) = -Sum_{k>=1} (-1)^k/p_k^x and p_k is the k-th prime. See A242304
c*sqrt(e/2), a constant associated with Dawson's integral and the asymptotic evaluation of the ideal hyperbolic n-cube volume, where c is A243433, twice the maximum of Dawson's integral. See A243434
C, a coin tossing constant related to the asymptotic variance of the length of the longest run of consecutive heads. See A245673
c, a constant appearing in the asymptotic lower bound of the size of a restricted difference set. See A242055
C, a constant associated with the estimation of the maximum of |zeta(1+i*t)|. See A246843
C, an auxiliary constant associated with the asymptotic number of values of the Euler totient function less than a given number. See A246750
c, the constant such that lim n -> infinity A003095(n)/c^(2^n) = 1. See A076949
c, where G_n = A212296(n)/A212297(n) = c + log(n+1)/Pi - 1/(4 Pi(n+1)) + O(1/n^2). See A212298
c/(2*Pi), where c = 299792458 (exactly) is the speed of light in vacuum (m/s). See A182997
c/P in SI units (meters), where c is the speed of light in vacuum and P is the number of periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom in one second. See A244823
c=prod(k>=1,(1+1/k^2)^2). See A084243
c=prod(k>=1,1+1/t(k)) where t(k)=k(k+1)/2 is the k-h triangular number. See A084248
c=prod(k>=1,1+8/k^3). See A084246
C=sum(k>=0,1/2^(2^k-1)). See A076214
c=sum(k>=1, 1/k/(exp(2*Pi*k)-1)). See A084254
c=sum(k>=1, coth(Pi*k)/k^3 ). See A084258
c=sum_{k>=0} 1/2^(k!). See A076187
Cahen's constant. See A118227
Calabi's constant. See A046095
cap height at which the area of a circular segment equals 1/4 that of the entire circle. See A133742
casus irreducibilis: See A019819
Catalan - Pi^2/16 + Pi*log(2)/4. See A091475
Catalan's constant 1 - 1/9 + 1/25 - 1/49 + 1/81 - ... See A006752
central angle in degrees corresponding to a circular segment with area r^2 of a circle with radius r. See A179374
central angle in radians corresponding to a circular segment with area r^2 of a circle with radius r. See A179373
central angle of a regular dodecahedron. See A156547
central angle of a regular tetrahedron. See A156546
central binomial sum S(5), where S(k) = Sum_{n>=1} 1/(n^k*binomial(2n,n)). See A261839
central binomial sum S(6), where S(k) = Sum_{n>=1} 1/(n^k binomial(2n,n)). See A261850
central binomial sum S(7), where S(k) = Sum_{n>=1} 1/(n^k binomial(2n,n)). See A261851
central binomial sum S(8), where S(k) = Sum_{n>=1} 1/(n^k binomial(2n,n)). See A261852
certain constant L. See A135096
Chaitin's constant. See A100264
Champernowne constant (or Mahler's number), formed by concatenating the positive integers. See A033307
characteristic impedance of vacuum in SI units. See A213610
circumradius of a regular dodecahedron with edge length 1. See A179296
circumradius of cyclic quadrilateral with sides 1, 2, 3, 4. See A200728
circumradius of pentagonal cupola with edge length 1. See A179592
circumradius of square cupola with edge length 1. See A179589
circumradius R of cyclic pentagon with sides 2, 3, 5, 7, and 11. See A200257
classical electron radius in meters. See A254277
classical Thomson cross section of an electron in square meters. See A255823
Cl_2(2*Pi/3), where Cl_2 is the Clausen function of order 2. See A261024
Cl_2(3*Pi/4), where Cl_2 is the Clausen function of order 2. See A261026
Cl_2(5*Pi/6), where Cl_2 is the Clausen function of order 2. See A261028
Cl_2(Pi/4), where Cl_2 is the Clausen function of order 2. See A261025
Cl_2(Pi/6), where Cl_2 is the Clausen function of order 2. See A261027
coefficient 'gamma' (see formula) appearing in Otter's result concerning the asymptotics of T_n, the number of non-isomorphic rooted trees of order n. See A261875
coefficient c appearing in the asymptotic evaluation of the number of prime additive compositions of n as c*(1/xi)^n, where xi is A084256. See A247734
coefficient c appearing in the asymptotic expression of the probability that a random n-permutation is a cube as c/n^3. See A246948
coefficient c appearing in the expression of the asymptotic expected shortest cycle in a random n-cyclation as c*sqrt(n). See A245422
coefficient C used in the asymptotic evaluation of the number of primitive Pythagorean triangles with area less than n, as C*sqrt(n). See A242439
coefficient c_m in c_m*log(N), the asymptotic mean number of factors in a random factorization of n <= N. See A247667
coefficient c_md in c_md*log(N)^(1/rho), the asymptotic mean number of distinct factors in a random factorization of n <= N. See A247605
coefficient c_v in c_v*log(N), the asymptotic variance of the number of factors in a random factorization of n <= N. See A247668
coefficient D appearing in the asymptotic evaluation of P_a(n), the number of primitive Pythagorean triples whose area does not exceed a given bound n. See A244596
coefficient e^G appearing in the asymptotic expression of the probability that a random n-permutation is a square, as sqrt(2/Pi)*e^G/sqrt(n). See A246945
coefficient K appearing in the asymptotic expression of the number of forests of ordered trees on n total nodes as K*4^(n-1)/sqrt(Pi*n^3). See A246949
coefficient of asymptotic expression of m(n), the number of multiplicative compositions of n. See A217598
coefficient of x in the reduction of (cos(x))^2 by x^2->x+1. See A193088
coefficient of x in the reduction of (e^x)*cos(x) by x^2->x+1. See A193084
coefficient of x in the reduction of (e^x)*sin(x) by x^2->x+1. See A193086
coefficient of x in the reduction of 2^(-x) by x^2->x+1. See A193035
coefficient of x in the reduction of 2^x by x^2->x+1. See A193032
coefficient of x in the reduction of 3^x by x^2->x+1. See A193034
coefficient of x in the reduction of cos(x) by x^2->x+1. See A193014
coefficient of x in the reduction of cosh(2x) by x^2->x+1. See A193082
coefficient of x in the reduction of cosh(x) by x^2->x+1. See A193025
coefficient of x in the reduction of e^(2x) by x^2->x+1. See A193028
coefficient of x in the reduction of e^(x/2) by x^2->x+1. See A193030
coefficient of x in the reduction of sin(x) by x^2->x+1. See A193012
coefficient of x in the reduction of sinh(2x) by x^2->x+1. See A193080
coefficient of x in the reduction of sinh(x) by x^2->x+1. See A193016
coefficient of x in the reduction of t^(-x) by x^2->x+1, where t=(1+sqrt(5))/2, the golden ratio. See A193078
coefficient of x in the reduction of t^x by x^2->x+1, where t=(1+sqrt(5))/2, the golden ratio. See A193076
common logarithm of e. See A002285
common value of A and B in Daniel Shanks' "incredible identity" A = B. See A245645
complementary error function at 1. See A099287
complete elliptic integral of the first kind at sqrt(2 sqrt(2) - 2). See A262427
complete elliptic integral of the first kind at sqrt(2)-1. See A130786
Compton electron radius in meters. See A081803
Compton wavelength in meters. See A230436
conductance quantum in units of S. See A081824
conjectured value for the Bloch constant. See A085508
conjectured value of constant C such that, if f(n) is the minimal area of a convex lattice polygon with n vertices, then f(n)/n^3 -> C as n -> infinity. See A096340
conjectured value of delta related to the Masser-Gramain constant. See A086058
connective constant of the (3.12^2) lattice. See A249776
connective constant of the honeycomb lattice. See A179260
Consider a domino formed from two adjacent 1 X 1 squares. the average distance between a random point in the left square and a random point in the right square. See A135707
Consider surface area of unit sphere as a function of the dimension d; maximize this as a function of d (considered as a continuous variable); sequence gives decimal expansion of the best d. See A074457
Consider surface area of unit sphere as a function of the dimension d; maximize this as a function of d (considered as a continuous variable); sequence gives decimal expansion of the resulting surface area. See A074456
Consider volume of unit sphere as a function of the dimension d; maximize this as a function of d (considered as a continuous variable); sequence gives decimal expansion of the best d. See A074455
Consider volume of unit sphere as a function of the dimension d; maximize this as a function of d (considered as a continuous variable); sequence gives decimal expansion of the resulting volume. See A074454
constant 'a' appearing in the asymptotic expression of the number of plane partitions of n as a*n^(-25/36)*exp(b*n^(2/3)). See A249386
constant 'B' appearing in the asymptotic expression of the number of partitions of n as (B/(2*Pi*n))*exp(2*B*sqrt(n)), in case of partitions into integers, each of which occuring only an odd number of times. See A249389
constant 'b' appearing in the asymptotic expression of the number of plane partitions of n as a*n^(-25/36)*exp(b*n^(2/3)). See A249387
constant 'kappa' = limit_{n -> infty)F_n-H_n, where H_n are harmonic numbers, F_n are squarefree totient analogs of H_n. See A138313
constant 'lambda' such that exp(lambda*z) is the first nontrivial first quadrant complex solution of this form to the functional equation f(z+1)-f(z)=f'(z) [imaginary part]. See A240341
constant 'lambda' such that exp(lambda*z) is the first nontrivial first quadrant complex solution of this form to the functional equation f(z+1)-f(z)=f'(z) [real part]. See A240340
constant (1 + A065474)/2. See A065493
constant (2-Pi/2). See A180434
constant 1 + 1/3! + 1/6! + 1/9! + ... = 1.16805 83133 75918 ... . See A143819
constant 1 + B3 (or 1 + B_3) related to the Mertens constant. See A238114
constant 1+3/(5+7/(9+11/(13+...))), using all odd integers in this generalized continued fraction. See A181050
constant 1.287194... related to a conjectural Viète-like formula for Pi. See A282089
constant 1.880678543683078094492191765... arising in A082732(n+2). See A144802
constant 1/1! + 1/4! + 1/7! + ... = 1.04186 53550 98909 ... . See A143820
constant 1/2! + 1/5! + 1/8! + ... = 0.50835 81599 84216 ... . See A143821
constant 2.127995907464... arising in A144779 See A144803
constant 2.35011738402276... arising in A144780 See A144804
constant 2.74167747444233776776... arising in A144781 See A144805
constant 2.9180120691410773... arising in A144782 See A144806
constant 3*exp(psi(1/3) + EulerGamma), where EulerGamma is the Euler-Mascheroni constant (A001620) and psi(x) is the digamma function. See A097663
constant 3*exp(psi(2/3) + EulerGamma), where EulerGamma is the Euler-Mascheroni constant (A001620) and psi(x) is the digamma function. See A097664
constant 3.0843510490691899023356932... arising in A144783 See A144807
constant 3.242214032005686241449842754211782... arising in A144784 See A144808
constant 3.39277252592669675143137... arising in A144785 See A144809
constant 4*exp(psi(1/4) + EulerGamma), where EulerGamma is the Euler-Mascheroni constant (A001620) and psi(x) is the digamma function. See A097665
constant 4*exp(psi(3/4) + EulerGamma), where EulerGamma is the Euler-Mascheroni constant (A001620) and psi(x) is the digamma function. See A097666
constant 5 * Pi^2 * A065476 / 48. See A065477
constant 5*exp(psi(1/5) + EulerGamma), where EulerGamma is the Euler-Mascheroni constant (A001620) and psi(x) is the digamma function. See A097667
constant 5*exp(psi(2/5)+EulerGamma), where EulerGamma is the Euler-Mascheroni constant (A001620) and psi(x) is the digamma function. See A097668
constant 5*exp(psi(3/5)+EulerGamma), where EulerGamma is the Euler-Mascheroni constant (A001620) and psi(x) is the digamma function. See A097669
constant 5*exp(psi(4/5) + EulerGamma), where EulerGamma is the Euler-Mascheroni constant (A001620) and psi(x) is the digamma function. See A097670
constant 6*exp(psi(1/6) + EulerGamma), where EulerGamma is the Euler-Mascheroni constant (A001620) and psi(x) is the digamma function. See A097671
constant 6*exp(psi(5/6) + EulerGamma), where EulerGamma is the Euler-Mascheroni constant (A001620) and psi(x) is the digamma function. See A097672
constant 6/A270121(1) + Sum_{n>=2} 1/A270121(n). See A270137
constant 8*exp(psi(1/8) + EulerGamma), where EulerGamma is the Euler-Mascheroni constant (A001620) and psi(x) is the digamma function. See A097673
constant 8*exp(psi(3/8) + EulerGamma), where EulerGamma is the Euler-Mascheroni constant (A001620) and psi(x) is the digamma function. See A097674
constant 8*exp(psi(5/8) + EulerGamma), where EulerGamma is the Euler-Mascheroni constant (A001620) and psi(x) is the digamma function. See A097675
constant 8*exp(psi(7/8) + EulerGamma), where EulerGamma is the Euler-Mascheroni constant (A001620) and psi(x) is the digamma function. See A097676
constant A*B in the asymptotic expression of the summatory function sum_{n=1..N} (1/phi(n)) as A(log(N)+B) + O(log(N)/N). See A098468
constant appearing in asymptotic variance of estimator for Pi in the Buffon-Laplace needle problem on a triangular grid with l/d=1. See A114603
constant appearing in the expected number of comparisons for a successful digital tree search (negated). See A086309
constant appearing in the expected number of comparisons for an unsuccessful digital tree search (negated). See A086310
constant appearing in the variance for inserting in a digital tree. See A086312
constant appearing in the variance for searching in a digital tree. See A086311
constant arising in analysis of classical atom in an expanding universe. See A212952
constant arising in clubbed binomial approximation for the lightbulb process. See A200439
constant arising in combinatorics of gamma-structures (RNA pseudoknot related). See A202478
constant arising in enumerating 2 X 2 integer matrices having a prescribed integer eigenvalue. See A141538
constant arising in enumeration of pseudo-triangulations. See A216117
constant arising in quantum concatenated code Hamiltonians. See A140415
constant arising in quantum concatenated code Hamiltonians. See A140416
constant arising in slices, slabs, and sections of the unit hypercube. See A209244
constant arising in upper bounding |zeta(1+ i*t)|. Formula (4.2), p.5 of Trudgian. See A218708
constant B3 (or B_3) related to the Mertens constant. See A083343
constant c = lim f(n)*n^(3/2)/rho^n where f(n) = A214833(n) is the number of arithmetic formulas for n, and rho = A242970. See A242955
constant C = maximum value of 2*sum(i=1..n, prime(i))/(n^2*log(n)). See A182170
constant C = maximum value that PrimePi(n)*log(n)/n reaches where PrimePi(n) is the number of primes less than or equal to n, A000720. See A209883
constant C = maximum value that psi(n)/n reaches where psi(n)=log(lcm(1,2,...,n)) and lcm(1,2,...,n)=A003418(n). See A206431
constant C = maximum value that sigma(n)*log(n^2)/n^2 reaches where sigma(n) = (sum of primes <= n), A034387. See A212394
constant C = minimum distance between the circumcenter and the excenter of an ex-bicentric quadrilateral whose sides are in an arithmetic progression 1 : 1+d : 1+2d : 1+3d. See A214097
constant c = sqrt((137 - 1/(57+sqrt(Pi)/10))/(2*Pi)), an approximation to the Feigenbaum bifurcation velocity constant delta (A006890). See A104123
constant c = Sum_{n>=0} binomial(n-1 + 1/2^(n-1), n). See A246900
constant c = Sum_{n>=0} C(1/2^n, n)*2^n. See A139824
constant c = Sum_{n>=0} C(1/2^n, n). See A139823
constant c = Sum_{n>=0} C(3/2^n, n). See A139825
constant c appearing in the expected number of pair of twin vacancies in a digital tree. See A086313
constant C associated with the QRS constant. See A131330
constant c in the asymptotic formula for A291839. See A291840
constant c in the asymptotic formula for connected labeled planar graphs on n vertices. See A266392
constant c satisfying sum(k>=1,1/c^sqrtint(k))=1 where sqrtint(x)=floor(sqrt(x)). See A082486
constant C such that 1 = Sum_{k>=1} 1/C^(k^3). See A211879
constant c such that A000289(n)=ceil(c^(2^n))+1. See A077141
constant c such that A003096(n-1)=ceil(c^(2^n)). See A077124
constant c such that A007018(n)=floor(c^(2^n)). See A077125
constant C such that floor(p# * C) is always a prime number (for p >= 2), where p# is the primorial function, i.e., the product of prime numbers up to and including p. See A116516
constant C such that Sum_{k>=1} 1/C^p(k) = 1 where p(k) is the k-th prime. See A078974
constant c= 1.240554576397679299452... arising in A144787. See A144810
constant c= 1.429887738657309204890861721408999... arising in A144788 See A144811
constant C>0 such that sum(k>=1,1/C^(k^2)) = 1. See A078975
constant C>0 such that sum(k>=1,C^k!) = 1. See A079459
constant cos(1) + sin(1) = 1.38177 32906 ... . See A143623
constant c_0 appearing in the asymptotic evaluation of the n-th Lebesgue constant (related to Fourier series) as L_n ~ (4/Pi^2)*log(n) + c_0. See A260129
constant D related to the conjectured asymptotic expression of the counting function of prime triples as D*n/log(n)^3. See A271886
constant defined as base 2 complement of A030315 [In the sequence of bits in the expansion of the Champernowne sequence (or word) in base 2, exchange digits 0 and 1]. See A180443
constant defined by binary sums involving Beatty sequences: c = Sum_{n>=1} 1/2^A049472(n) = Sum_{n>=1} A001951(n)/2^n. See A119809
constant defined by binary sums involving Beatty sequences: c = Sum_{n>=1} A049472(n)/2^n = Sum_{n>=1} 1/2^A001951(n). See A119812
constant defined in A030315. See A180443
constant describing the average number of edges of a random labeled planar graph with n vertices. See A267409
constant describing the expected number of components in a random labeled planar graph on n vertices. See A267412
constant describing the mean number of 2-connected components in a random connected labeled planar graph on n vertices. See A267411
constant describing the variance of the number of edges of a random labeled planar graph on n vertices. See A267410
constant equal to concatenated nonprimes. See A129808
constant equal to concatenated semiprimes. See A129112
constant E_3(0) := sum {n = 0.. inf} (-1)^floor(n/3)/n! = 1 + 1/1! + 1/2! - 1/3! - 1/4! - 1/5! + + + - - - ... = 2.28494 23824 ... . See A143625
constant E_3(1) := sum {k = 0.. inf} (-1)^floor(k/3)*k/k! = 1/1! + 2/2! - 3/3! - 4/4! - 5/5! + + + - - - ... = 1.30155 94959 ... . See A143626
constant E_3(2) := sum {k = 0.. inf} (-1)^floor(k/3)*k^2/k! = 1/1! + 2^2/2! - 3^2/3! - 4^2/4! - 5^2/5! + + + - - - ... = 0.68605 60507 ... . See A143627
constant factor k in the asymptotic formula for A291837. See A291838
constant formed by concatenating the imperfect numbers. See A133017
constant g in the asymptotic formula for labeled planar graphs on n vertices. See A266391
constant g in the asymptotic formula for the number of 2-connected planar graphs on n labeled nodes. See A291835
constant given by Sum_{n>=0} A083952(n)/2^(n+1). See A113737
constant in Kac's formula. See A093601
constant in the Einstein's formula of the radial excess; Delta R = G*M/(3*c^2), where M is the mass of a ball and R is the radius. See A236629
constant in the Rayleigh criterion: first zero of J_1, divided by Pi. See A245461
constant k such that function (x^2+1)^(1/x)+(x^2-1)^(1/x) is maximum for x=k. See A178422
constant K, the unique solution > 1 to 2*Pi*Log[k] == Pi*(1 - 1/k) See A101314
constant mentioned in A247562. See A248497
constant obtained through Lüroth retro-expansion of the prime sequence. See A225755
constant obtained through Pierce retro-expansion of the prime sequence. See A132120
constant of Theodorus. See A226317
constant Product_{i=1..inf} ((1-3/(2*(i+1)))^(1/2^i). See A054399
constant Prod_{p>=3} (1 - (-1)^((p-1)/2)/(p-1)). See A199401
constant related to a dynamical system involving the zeta function. See A144738
constant related to complexity of the tribonacci word (A080843). See A275933
constant related to Goat Problem, Donkey Problem, Tenenbaum and A173201. See A173571
constant rho = lim f(n)^(1/n), where f(n) = A214833(n) is the number of arithmetic formulas for n (cf. comments). See A242970
constant rho satisfying Gaussian Phi(rho * sqrt(2)) = erf(rho) = 1/2. See A069286
constant sum 1/(q*log(q)), summed over prime powers q>1. See A137250
constant Sum_{i,j,k=1..inf} 1/2^(i*j*k). See A116217
constant Sum_{k=0..infinity} (-1)^k/(10*k)!. See A196498
constant Sum_{k>=1} log(k+1)/k/(k+1). See A131688
constant Sum_{n>=0} 1/A112373(n), where the partial quotients of the continued fraction A114551 satisfy A114551(2n) = A112373(n) and A114551(2n+1) = A112373(n+1)/A112373(n). See A114550
constant term of the reduction of (cos(x))^2 by x^2->x+1. See A193087
constant term of the reduction of (e^x)*cos(x) by x^2->x+1. See A193083
constant term of the reduction of (e^x)*sin(x) by x^2->x+1. See A193085
constant term of the reduction of (sin(x))^2 by x^2->x+1. See A193089
constant term of the reduction of 2^(-x) by x^2->x+1. See A193009
constant term of the reduction of 2^x by x^2->x+1. See A193031
constant term of the reduction of 3^x by x^2->x+1. See A193033
constant term of the reduction of cos(x) by x^2->x+1. See A193013
constant term of the reduction of cosh(2x) by x^2->x+1. See A193081
constant term of the reduction of coshh(x) by x^2->x+1. See A193017
constant term of the reduction of e^(-x) by x^2->x+1. See A193026
constant term of the reduction of e^(2x) by x^2->x+1. See A193027
constant term of the reduction of e^(x/2) by x^2->x+1. See A193029
constant term of the reduction of e^x by x^2->x+1. See A193010
constant term of the reduction of sin(x) by x^2->x+1. See A193011
constant term of the reduction of sinh(2x) by x^2->x+1. See A193079
constant term of the reduction of sinh(x) by x^2->x+1. See A193015
constant term of the reduction of t^(-x) by x^2->x+1, where t=(1+sqrt(5))/2, the golden ratio. See A193077
constant term of the reduction of t^x by x^2->x+1, where t=(1+sqrt(5))/2, the golden ratio. See A193075
constant term, which is also a root, of the cubic polynomial below. See A273067
constant that satisfies gamma(x) = sqrt(Pi) and x > 1/2. See A206099
constant theta appearing in the expected number of pair of twin vacancies in a digital tree. See A086315
constant W(1) appearing in the asymptotic expression of the probability that two independent, random n-permutations have the same cycle type as W(1)/n^2. See A246879
constant which yields the Catalan number if raised to itself. See A173164
constant whose continued fraction form is the sequence of all the prime numbers. See A084255
constant whose continued fraction is based on Padovan numbers A000931. See A191896
constant whose continued fraction representation is [0!; 1!, 2!, 3!, 4!, 5!, ...] (through all nonnegative integers). See A100608
constant whose continued fraction representation is [0; 2, 4, 6, 8, ..., 2*n, ...], i.e., 2/(4+6/(8+10/(12+...) using every even integer. See A181051
constant whose continued fraction representation is [A000523(1); A000523(2), A000523(3), A000523(4), ...] for all positive integers. Note A000523(n) is floor(log_2(n)). See A100610
constant whose continued fraction representation is [e^0; e^1, e^2, e^3, e^4, ...] where e is A001113 and the exponents cycle through all nonnegative integers. See A100609
constant whose continued fraction representation is [Phi^0; Phi^1, Phi^2, Phi^3, Phi^4, ...] where Phi is the golden ratio (A001622) and the exponents cycle through all nonnegative integers. See A180660
constant whose continued fraction representation is [Pi^0; Pi^1, Pi^2, Pi^3, Pi^4, ...] where Pi is the ratio of a circle's circumference to its diameter (A000796) and the exponents cycle through all nonnegative integers. See A180661
constant x satisfying (cos(x))^2 = sin(x). See A175288
constant x satisfying x! = Gamma[x+1] = 40. See A129624
constant x satisfying x^x = 6. See A173160
constant x such that the continued fraction expansion of 2*x (A109170) yields the continued fraction expansion of x (A109168) interleaved with positive even numbers. See A109169
constant x such that x^x = e. Inverse of W(1), where W is Lambert's function. See A030797
constant x that satisfies Arithmetic-Geometric-Mean(3,x) = Pi. See A172084
constant x that satisfies x = exp(1/sqrt(x)). See A099554
constant x that satisfies: 1 = Sum_{n>=1} x^(n*(n+1)/2). See A106332
constant x that satisfies: F(x) - x*F'(x) = 0, where F(x) = Sum_{n>=0} x^(n*(n+1)/2). See A106333
constant x which satisfies x^x = 5. See A173159
constant x whose continued fraction expansion equals A006519 (highest power of 2 dividing n). See A100338
constant z = Sum_{n>=1} {(3/2)^n} * (2/3)^n, where {x} is the fractional part of x. See A264919
constant z = Sum_{n>=1} {(3/2)^n} / 2^n, where {x} denotes the fractional part of x. See A264918
constant z = Sum_{n>=1} {(4/3)^n} * (3/4)^n, where {x} is the fractional part of x. See A264921
constant z = Sum_{n>=1} {(5/2)^n} * (2/5)^n, where {x} is the fractional part of x. See A264920
constant z = Sum_{n>=1} {2^n/n} * n/2^n, where {x} is the fractional part of x. See A264922
constrained expectation of the product of an angle and the opposite side in a random spherical triangle. See A275393
continued fraction 1'+1/(2'+2/(3'+3/...)), where n' is the arithmetic derivative of n. See A210937
continued fraction 1+1/(1+2/(1+3/(1+4/(1+5/(1+...))))). See A111129
continued fraction 1/(2+1/(3+1/(5+1/(7+1/(11+...))))). See A084255
continued fraction 1/(Pi+1/(Pi+1/(Pi+1/(Pi+...)))). See A086773
continued fraction 1’+1/(2’+1/(3’+1/(4’+1/(5’…)))), where n’ is the arithmetic derivative of n. See A190143
continued fraction 4+6/(9+10/(14+15/21+...)) where the terms are the semiprimes: A001358. See A131701
continued fraction c(1) +c(1)/(c(2) +c(2)/(c(3) +c(3)/(c(4) +c(4)/....))), where c(i)=(i-1)!. See A233589
continued fraction c(1) +c(1)/(c(2) +c(2)/(c(3) +c(3)/(c(4) +c(4)/....))), where c(i)=2^(i-1). See A233590
continued fraction c(1) +c(1)/(c(2) +c(2)/(c(3) +c(3)/(c(4) +c(4)/....))), where c(i)=i^2. See A233591
continued fraction constant (base 10). See A062542
continued fraction e/(Pi+e/(Pi+e/(...))). See A260799
continued fraction F(0)+F(1)/(F(2)+F(3)/(F(4)+F(5)/ ... where F(n) is the n-th Fibonacci number. See A180659
continued fraction prime(1) + prime(1)/(prime(2) + prime(2)/(prime(3) + prime(3)/(prime(4) + prime(4)/...))). See A233588
continued fraction transform of e; see Comments. See A229594
continued fraction transform of Pi. See A228492
continued fraction whose terms are half the gaps of the odd nonprimes A014076. See A142723
continued fraction with elements given by A209272. See A209273
continued fraction with quotients equal to Fermat numbers. See A210395
continued fraction [2/1, 3/2, 4/3, 5/4,...]. See A229353
continued fraction [x(1),x(2),x(3),...], where x(n) = F(n+1)/F(n), where F = A000045 (Fibonacci numbers). See A229350
convergent series S = Sum_{k >= 1} A007097(k). See A292667
convergent sum of weighted self-defining reciprocals. See A154310
convergent to the recurrence x = 1/(x^(1/x)-1/x-1) for all starting values of x >= 3. See A144184
convergent to the sum of (1/8)^p where p ranges over the set of prime numbers. See A132799
convergent to the sum of (1/9)^p where p ranges over the set of prime numbers. See A132821
convergent to x = 1/(x^(1/(x+1))-1) for x > 1. See A144211
conversion factor from radians to arcseconds. See A217572
conversion factor of arcseconds to radians. See A155970
Conway's constant. See A014715
Conway-Guy constant, a constant associated with Erdős' sum-distinct set constant. See A242730
Copeland-Erdős constant: concatenate primes. See A033308
cos(1). See A049470
cos(1)/(1+cos(1)). See A222480
cos(1/2). See A201505
cos(2*Pi/17). See A210644
cos(cos(1)). See A085663
cos(cos(cos(1))). See A085664
cos(gamma). See A119806
cos(i). See A073743
cos(log(2)). See A219705
cos(Pi degrees). (Of course, cos(Pi radians) = -1.) See A051554
cos(Pi/(1+phi)), where phi is the golden ratio. See A193537
cos(Pi/17). See A210649
cos(Pi/2 degrees). (Of course, cos(Pi/2 radians) = 0.) See A051557
cos(Pi/24) = cos(7.5 degrees). See A144982
Cos(Pi/7). See A073052
cos(Pi/8) = cos(22.5 degrees). See A144981
cos(x), where x is the least positive solution of 1=(x^2)cos(x). See A196618
cosecant of 1 degree. See A110937
cosecant of 180/7 = 25.7142857+ degrees = csc(Pi/7). See A121598
cosecant of 20 degrees = csc(Pi/9). See A121602
cosecant of 22.5 degrees = csc(Pi/8). See A121601
cosecant of 36 degrees = csc(Pi/5). See A121570
cosh(1)-sinh(1). See A068985
cosh(1). See A073743
Cosh[EulerGamma]=1.17126595.. See A147708
cosine integral at 1. See A099282
cosine of 1 degree. See A019898
cosine of 46 degrees. See A019853
cosine of 47 degrees. See A019852
cosine of 48 degrees. See A019851
cosine of 49 degrees. See A019850
cosine of 50 degrees. See A019849
cosine of 51 degrees. See A019848
cosine of 52 degrees. See A019847
cosine of 53 degrees. See A019846
cosine of 54 degrees. See A019845
cosine of 55 degrees. See A019844
cosine of 56 degrees. See A019843
cosine of 57 degrees. See A019842
cosine of 58 degrees. See A019841
cosine of 59 degrees. See A019840
cosine of 72 degrees. See A019827
cosine of the golden ratio, negated. That is, the decimal expansion of -cos((1+sqrt(5))/2). See A139346
cosine of the golden ratio, negated. That is, the decimal expansion of -cos((1+sqrt(5))/2). See A139346
cot (Pi degrees) (of course cot (Pi radians) is undefined). See A073442
cot 1. See A073449
cotangent of 11 degrees. See A019977
cotangent of 12 degrees. See A019976
cotangent of 13 degrees. See A019975
cotangent of 14 degrees. See A019974
cotangent of 16 degrees. See A019972
cotangent of 17 degrees. See A019971
cotangent of 18 degrees. See A019970
cotangent of 19 degrees. See A019969
cotangent of 2 degrees. See A019986
cotangent of 20 degrees. See A019968
cotangent of 21 degrees. See A019967
cotangent of 22 degrees. See A019966
cotangent of 23 degrees. See A019965
cotangent of 24 degrees. See A019964
cotangent of 26 degrees. See A019962
cotangent of 27 degrees. See A019961
cotangent of 28 degrees. See A019960
cotangent of 29 degrees. See A019959
cotangent of 3 degrees. See A019985
cotangent of 31 degrees. See A019957
cotangent of 32 degrees. See A019956
cotangent of 33 degrees. See A019955
cotangent of 34 degrees. See A019954
cotangent of 35 degrees. See A019953
cotangent of 36 degrees. See A019952
cotangent of 37 degrees. See A019951
cotangent of 38 degrees. See A019950
cotangent of 39 degrees. See A019949
cotangent of 4 degrees. See A019984
cotangent of 40 degrees. See A019948
cotangent of 41 degrees. See A019947
cotangent of 42 degrees. See A019946
cotangent of 43 degrees. See A019945
cotangent of 44 degrees. See A019944
cotangent of 46 degrees. See A019942
cotangent of 47 degrees. See A019941
cotangent of 48 degrees. See A019940
cotangent of 49 degrees. See A019939
cotangent of 5 degrees. See A019983
cotangent of 50 degrees. See A019938
cotangent of 51 degrees. See A019937
cotangent of 52 degrees. See A019936
cotangent of 53 degrees. See A019935
cotangent of 54 degrees. See A019934
cotangent of 55 degrees. See A019933
cotangent of 56 degrees. See A019932
cotangent of 57 degrees. See A019931
cotangent of 58 degrees. See A019930
cotangent of 59 degrees. See A019929
cotangent of 6 degrees. See A019982
cotangent of 61 degrees. See A019927
cotangent of 62 degrees. See A019926
cotangent of 63 degrees. See A019925
cotangent of 64 degrees. See A019924
cotangent of 65 degrees. See A019923
cotangent of 66 degrees. See A019922
cotangent of 67 degrees. See A019921
cotangent of 68 degrees. See A019920
cotangent of 69 degrees. See A019919
cotangent of 7 degrees. See A019981
cotangent of 70 degrees. See A019918
cotangent of 71 degrees. See A019917
cotangent of 73 degrees. See A019915
cotangent of 74 degrees. See A019914
cotangent of 76 degrees. See A019912
cotangent of 77 degrees. See A019911
cotangent of 78 degrees. See A019910
cotangent of 79 degrees. See A019909
cotangent of 8 degrees. See A019980
cotangent of 80 degrees. See A019908
cotangent of 81 degrees. See A019907
cotangent of 82 degrees. See A019906
cotangent of 83 degrees. See A019905
cotangent of 84 degrees. See A019904
cotangent of 85 degrees. See A019903
cotangent of 86 degrees. See A019902
cotangent of 87 degrees. See A019901
cotangent of 88 degrees. See A019900
cotangent of 9 degrees. See A019979
coth(1). See A073747
coth(Pi). See A175316
Coth[EulerGamma]=1.9207... See A147711
Cp(1), the molar specific heat of an atomic ideal gas at constant pressure. See A272002
Cp(2), the molar specific heat of an diatomic ideal gas at constant pressure. See A272003
Cp(3), the molar specific heat of an triatomic ideal gas at constant pressure, in J mol^-1 K^-1. See A272004
Cp(4), the molar specific heat of an tetraatomic ideal gas at constant pressure, in J mol^-1 K^-1. See A272005
Cp(5), the molar specific heat of an pentaatomic ideal gas at constant pressure, in J mol^-1 K^-1. See A274984
csc (Pi degrees) (of course csc (Pi radians) is undefined). See A073440
csc 1. See A073447
csc((1+sqrt(5))/2), where (1+sqrt(5))/2 is the golden ratio. See A139350
csch(1). See A073745
cube of cosine of 1 degree. See A111591
cube of sine of 1 degree. See A111487
cube of tan 1 degree. See A111498
cube root of (3/4). See A210973
cube root of 10. See A010582
cube root of 100. See A010670
cube root of 11. See A010583
cube root of 12. See A010584
cube root of 13. See A010585
cube root of 14. See A010586
cube root of 15. See A010587
cube root of 16. See A010588
cube root of 17. See A010589
cube root of 1729.03. See A250023
cube root of 18. See A010590
cube root of 19. See A010591
cube root of 2 divided by 2. See A235362
cube root of 2 multiplied by square root of 3. See A253583
cube root of 2. See A002580
cube root of 20. See A010592
cube root of 21. See A010593
cube root of 22. See A010594
cube root of 23. See A010595
cube root of 24. See A010596
cube root of 25. See A010597
cube root of 26. See A010598
cube root of 28. See A010599
cube root of 29. See A010600
cube root of 3. See A002581
cube root of 30. See A010601
cube root of 31. See A010602
cube root of 32. See A010603
cube root of 33. See A010604
cube root of 34. See A010605
cube root of 35. See A010606
cube root of 36. See A010607
cube root of 37. See A010608
cube root of 38. See A010609
cube root of 39. See A010610
cube root of 4. See A005480
cube root of 40. See A010611
cube root of 41. See A010612
cube root of 42. See A010613
cube root of 43. See A010614
cube root of 44. See A010615
cube root of 45. See A010616
cube root of 46. See A010617
cube root of 47. See A010618
cube root of 48. See A010619
cube root of 49. See A010620
cube root of 5. See A005481
cube root of 50. See A010621
cube root of 51. See A010622
cube root of 52. See A010623
cube root of 53. See A010624
cube root of 54. See A010625
cube root of 55. See A010626
cube root of 56. See A010627
cube root of 57. See A010628
cube root of 58. See A010629
cube root of 59. See A010630
cube root of 6. See A005486
cube root of 60. See A010631
cube root of 61. See A010632
cube root of 62. See A010633
cube root of 63. See A010634
cube root of 65. See A010635
cube root of 66. See A010636
cube root of 67. See A010637
cube root of 68. See A010638
cube root of 69. See A010639
cube root of 7. See A005482
cube root of 70. See A010640
cube root of 71. See A010641
cube root of 72. See A010642
cube root of 73. See A010643
cube root of 74. See A010644
cube root of 75. See A010645
cube root of 76. See A010646
cube root of 77. See A010647
cube root of 78. See A010648
cube root of 79. See A010649
cube root of 80. See A010650
cube root of 81. See A010651
cube root of 82. See A010652
cube root of 83. See A010653
cube root of 84. See A010654
cube root of 85. See A010655
cube root of 86. See A010656
cube root of 87. See A010657
cube root of 88. See A010658
cube root of 89. See A010659
cube root of 9. See A010581
cube root of 90. See A010660
cube root of 91. See A010661
cube root of 92. See A010662
cube root of 93. See A010663
cube root of 94. See A010664
cube root of 95. See A010665
cube root of 96. See A010666
cube root of 97. See A010667
cube root of 98. See A010668
cube root of 99. See A010669
cube root of cosine of 1 degree. See A111664
cube root of e. See A092041
cube root of e^(Pi*sqrt(163)) - 744. See A111310
cube root of Pi. See A092039
cube root of sine of 1 degree. See A111474
cube root of the golden ratio. That is, the decimal expansion of ((1+sqrt(5))/2)^(1/3). See A139340
cube root of the golden ratio. That is, the decimal expansion of ((1+sqrt(5))/2)^(1/3). See A139340
cuberoot(1*cuberoot(2*cuberoot(3*...))). See A123852
cubic root of 1729. See A215889
Current estimate of decimal expansion of reciprocal of fine-structure constant alpha. See A005600
Cv(1), the molar specific heat of an atomic ideal gas at constant volume. See A272001
Cv(5), the molar specific heat of a pentaatomic gas at constant volume. See A272005
Cv(6), the molar specific heat of a hexaatomic gas at constant volume. See A274984
c^2, c being the speed of light in vacuum in SI units. See A182999
c^c^c^... where c is the constant defined in A037077. See A052110
C_1 = gamma+log(log(2))-2*Ei(-log(2)), one of the Tauberian constants, where Ei is the exponential integral function. See A248472
C_1 constant of Melas arising in Calderon-Zygmund theory. See A171423
c_1, a constant associated with the computation of the maximal modulus of an algebraic integer. See A245324
C_2 (so named by S. Finch), a constant which is an analog of Niven's constant when mean of exponents is considered instead of maximum. See A272531
C_3, a constant related to sharp inequalities for the product of 3 polynomials, which was introduced by David Boyd. See A242711
C_4, a constant related to sharp inequalities for the product of 4 polynomials, which was introduced by David Boyd. See A242712
C_5, a constant related to sharp inequalities for the product of 5 polynomials, which was introduced by David Boyd. See A242713
C_6, a constant related to sharp inequalities for the product of 6 polynomials, which was introduced by David Boyd. See A242714
c_e, coefficient associated with the asymptotic evaluation c_e*2^(n^2/4) of the number of subspaces of the n-dimensional vector space over the finite field F_2, n being even. See A242938
c_o, coefficient associated with the asymptotic evaluation c_o*2^(n^2/4) of the number of subspaces of the n-dimensional vector space over the finite field F_2, n being odd. See A242939
C_{1/2}, a constant related to Kolmogorov's inequalities. See A263809

### Start of section D

d - log(d-e) where d is Feigenbaum's bifurcation velocity constant (A006890, delta constant) and e is Euler's constant. See A101419
d = 1-(1+log(log(2)))/log(2) = 0.08607133.... See A074738
D(1) where D(x) is the Dawson function. See A087654
D(1), where D(x) is the infinite product function defined in the formula section (or in the Finch reference). See A241421
D(1/2), where D(x) is the infinite product function defined in the formula section (or in the Finch reference). See A241420
d(n) = log(n) + log(log(n)) - prime(n)/n at n = 2688, a (local?) maximum. See A255251
D, an auxiliary constant associated with the asymptotic number of values of the Euler totient function less than a given number. See A246751
D/2, where D^2 = 3*sqrt(3)/Pi. See A093604
Dawson's integral at the inflection point. See A245262
de Bruijn constant. See A113276
decay rate for random parking and halving. See A276515
decimal expansion of 9/9801. See A113657
decimal expansion of Liouville's number or Liouville's constant). See A012245
Decimal expansion of: (1) a simple-continued-fraction-like nesting in which all "partial quotients" are Khinchin's constant (A002210), or, equivalently, (2) the positive solution p of the polynomial p^2 - Khinchin*p - 1 = 0. See A100485
Decimal expansion of: Sum_{n>=1} (1/2 - 1/2^n)^n / n. See A292179
Decimal expansion of: Sum_{n>=1} -1 / (n * (1/2 - 2^n)^n). See A292178
Dedekind eta(2*I). See A248191
Dedekind eta(4*I). See A248192
Dedekind eta(I/2). See A248190
Define k(n+1) to be k(n) - (k(n)sqrt(1-k(n)^2) + arcsin(k(n)) - Pi/4). The sequence is the decimal expansion of limit_{n -> infinity} k(n). See A086751
definite integral of x^(1/x) for x = 0 to 1. See A175999
definite integral of y=x^(1/x) for x=0 to e, the only maximum of this graph. See A175994
definite integral of y=x^(1/x)-1 for x=1 to e, the only maximum of this graph. See A175997
delta = (1+alpha)/4, a constant appearing in Koecher's formula for Euler's gamma constant, where alpha is A065442, the Erdős-Borwein Constant. See A242000
delta_2, a constant associated with a certain two-dimensional lattice sum. See A247042
delta_3, a constant associated with a certain 3-dimensional lattice sum. See A247046
denominator of the Einstein's formula of the radial excess; Delta R = G*M/(3*c^2), where G is the Newton's gravitational constant, M is the mass of a ball and R is the radius. See A235997
density of exponentially 2^n-numbers (A138302). See A271727
density of integers that are divisible by the square of their least prime factor. See A283071
derivative Ai'(0) (negated), where Ai is the Airy function of the first kind. See A284868
derivative of logarithmic integral at its positive real root. See A276709
derivative of the Dirichlet function eta(z) at z = -1. See A271533
derivative y'(0) where y(x) is the solution to the differential equation y(x)+exp(y(x))=0, with y(0)=y(beta)=0 and beta maximum (beta = A249136). See A249137
deuteron mass energy equivalent in J. See A254280
deuteron mass in kg. See A254279
deuteron mass in u. See A254281
DeVicci's tesseract constant. See A243309
diameter of the regular 7-gon (heptagon) of edge length 1. See A178818
Dickman function at 1/3. See A175475
Dickman function at 1/4. See A245238
Dickman's constant C_4. See A258945
difference (A175993 minus A175994). See A175995
difference between 1/5 and the probability that a random real number is evil. See A271881
difference between Pi/8 (A019675) and A091473. See A091494
difference in area between a parabola and a catenary up to the cross-over point (at x=1 with vertex at y=0). See A225146
Digamma function at 1/2 + 1/Pi, negated. See A257959
Digamma function at 1/Pi, negated. See A257958
dilog(phi-1) = polylog(2, 2-phi) with phi = (1 + sqrt(5))/2. See A242599
dilogarithm of (the golden mean minus 1), Li_2(phi-1). See A152115
dimension d in which a ball of radius 1/2 has maximum volume. See A275162
dimension in which the sphere of unit radius has unit volume. See A175477
dimensionless Blasius coefficient 0.332... in the formula for the shear stress on a flat plate in a boundary layer flow. See A256522
dimensionless coefficient of Stefan-Boltzmann constant. See A222609
dimer constant. See A143233
Dirichlet beta function of 4. See A175572
Dirichlet beta function of 5. See A175571
Dirichlet beta function of 6. See A175570
Dirichlet beta function of 7. See A258814
Dirichlet beta function of 8. See A258815
Dirichlet beta function of 9. See A258816
Dirichlet beta-function at 1/2. See A195103
Dirichlet beta-function at 1/3. See A261622
Dirichlet beta-function at 1/4. See A261623
Dirichlet beta-function at 1/5. See A261624
Dirichlet eta function at 4. See A267315
Dirichlet eta function at 5. See A267316
Dirichlet eta function at 6. See A275703
Dirichlet eta function at 7. See A275710
Dirichlet eta-function at 3. See A197070
Dirichlet L-series of the non-principal character mod 6 evaluated at s=2. See A214552
Dirichlet series L_{-7}(2). See A103133
Dottie number: decimal expansion of root of cos(x) = x. See A003957
double infinite sum (negated) sum_{m=1..infinity} sum_{k=0..infinity} (-1)^m/((2k+1)^2+m^2). See A251992
double integral int_{0..inf} int_{0..inf} 1/sqrt((1+x^2)(1+y^2)(1+(x+y)^2)) dx dy. See A273842
double Zeta-function zeta(2,2). Not to be confused with the Hurwitz Zeta function of two arguments or with the second derivative of the Riemann Zeta function. See A197110
doubly infinite sum N_3 = Sum_{i,j,k = -inf..inf} (-1)^(i+j+k)/(i^2+j^2+k^2), a lattice constant analog of Madelung's constant (negated). See A271872
duration of the Gregorian year in SI seconds See A213613
duration of the Julian year in SI seconds See A213612
D^2, a constant associated with the "Dimer Problem" on a triangular lattice. See A247548
d_0, the constant term in the asymptotic expansion of the average number of registers needed to evaluate a binary tree. See A245253
e: See A001113

### Start of section E

E: See A001113
e (A001113) written in base 2. See A086996
e * sqrt(Pi) * erf(1). See A125961
e + 1 + log(e+1). See A229175
e + phi. See A237197
e + Pi + phi. See A133055
e + Pi. See A059742
e - 1. See A091131
e - phi. See A237199
e / log_10(e), where e = A001113. See A220260
e rounded to n places. See A011544
e truncated to n places. See A011543
e written as a sequence of distinct positive integers. See A175728
e!. See A178394
E(1/sqrt(2)) = 1.35064..., where E is the complete elliptic integral. See A257407
E(T_{0,1}), the expected "first-passage" time required for an Ornstein-Uhlenbeck process to cross the level 0, given that it started at level 1. See A249418
E(T_{0,2}), the expected "first-passage" time required for an Ornstein-Uhlenbeck process to cross the level 0, given that it started at level 2. See A250719
E(T_{1,0}), the expected "first-passage" time required for an Ornstein-Uhlenbeck process to cross the level 1, given that it started at level 0. See A249417
E(T_{2,0}), the expected "first-passage" time required for an Ornstein-Uhlenbeck process to cross the level 2, given that it started at level 0. See A250718
e*gamma*Pi*phi, where gamma is the Euler-Mascheroni constant and phi is the golden ratio. See A135000
e*gamma*Pi, where gamma is Euler's constant. See A203816
e*gamma, the product of Euler number and Euler-Mascheroni constant. See A244274
e*log(Pi). See A179701
e*phi/Pi, where phi = (sqrt(5) + 1)/2. See A277115
e*Pi*erfc(1). See A257526
e*Pi*phi, where phi = (sqrt(5) + 1)/2. See A131563
e*Pi*phi/2. See A135154
e*Pi*phi/3, where phi is the golden ratio. See A135183
e*Pi*phi/5. See A135155
e+1/e. See A137204
e+2Pi-9. See A136323
e+gamma+Pi+phi, where gamma is the Euler-Mascheroni constant and phi is the golden ratio. See A135001
e+pi with each of e and pi pre-truncated to n places. See A129897
e+Pi+e*Pi+e^Pi+Pi^e. See A105643
e+sqrt(1+e^2). See A188640
e+sqrt(e^2-1). See A188739
e-1/e. See A174548
e-sqrt(e^2-1). See A188738
e. See A001113
e/(e-1) = 1 + 1/e + 1/e^2 + ... See A185393
e/11. See A019748
e/12. See A019749
e/13. See A019750
e/14. See A019751
e/16. See A019753
e/17. See A019754
e/18. See A019755
e/19. See A019756
e/2. See A019739
e/21. See A019758
e/22. See A019759
e/23. See A019760
e/24. See A019761
e/3. See A019740
e/4. See A019741
e/6. See A019743
e/7. See A019744
e/8. See A019745
e/9. See A019746
e/gamma, the ratio of Euler number and the Euler-Mascheroni constant. See A244499
e/phi, where phi is the golden ratio (A001622). See A094868
e/Pi. See A061360
e: See A244601
e: See A244602
edge length of a regular 11-gon with unit circumradius. See A272489
edge length of a regular 13-gon with unit circumradius. See A272490
edge length of a regular 15-gon with unit circumradius. See A272534
edge length of a regular 16-gon with unit circumradius. See A272535
edge length of a regular 19-gon with unit circumradius. See A272491
edge length of a regular 20-gon with unit circumradius. See A272536
edge length of a regular 9-gon with unit circumradius. See A272488
edge length of a regular heptagon with unit circumradius. See A272487
Efimov's scaling constant. See A242978
Ei(1)/e, where Ei is the exponential integral function. See A283743
eighth (of 10) decimal selvage number; the n-th digit of a decimal selvage number, x, is equal to the tenths digit of n*x. See A071875
eighth derivative of the infinite power tower function x^x^x... at x = 1/2, negated. See A277529
eighth root of 3. See A246710
electric permittivity of vacuum in SI units. See A081799
electron charge 1.602177330000*10-19 (Coulomb). See A081802
electron charge to mass quotient (negated) See A081815
electron magnetic moment to Bohr magneton ratio, negated. See A238200
electron mass (mass units). See A003672
electron mass in kg. See A081801
Embree-Trefethen constant. See A118288
entropy constant related to A063443. See A247413
entropy of folding of the triangular lattice. See A245772
Erdos-Szekeres constant zeta(3/2)/zeta(3). See A090699
Erdős-Borwein constant Sum_{k>=1} 1/(2^k - 1). See A065442
error function at 1. See A099286
error function of square root of 2. See A110894
escape probability for a random walk on the 3-D cubic lattice (a Polya random walk constant). See A242761
escape probability for a random walk on the 3D bcc lattice. See A293238
escape probability for a random walk on the 3D fcc lattice. See A293237
estimate of 1 - (the weakly triple-free set constant). See A157245
estimate of the strongly triple-free set constant. See A086316
estimate of the weakly triple-free set constant. See A157244
eta/xi = A086318/A086317, a coefficient associated with the asymptotics of the number of weakly binary trees. See A245651
eta_A, a constant associated with the asymptotics of the enumeration of labeled acyclic digraphs. See A245655
Euler double sum sum_(m>0)(sum_(n>0)((-1)^(m+n-1)/((2m-1)(m+n-1)^3))). See A244839
Euler-Mascheroni constant gamma. See A001620
Euler's Multi-Zeta Sum S(2,3) = sum(sum((-1)^(k+1)/k, {k, 1, n})^2/(n+1)^3, {n, 1, infinity}). See A238135
Euler-Kronecker constant (as named by P. Moree) for hypotenuse numbers. See A242013
Euler-Kronecker constant (as named by P. Moree) for non-hypotenuse numbers. See A242015
Euler's constant (or the Euler-Mascheroni constant), gamma. See A001620
Euler-Mascheroni constant divided by 2. See A155739
EulerGamma/2 + log(2). See A114864
even limit of the harmonic power tower (1/2)^(1/3)^...^(1/(2n)). See A242759
Except for the initial term, also the digital root of 11^n. Except for the initial term, also the decimal expansion of 125/1001. Except for the initial term, also the digital root of 2^n. See A029898
excess of the exponential curve arc length over the length of the x-axis from -infinity to zero. See A278386
exp((gamma - 1)/sqrt(e)). See A212299
exp(-1/(2*sqrt(2))). See A227958
exp(-gamma/2). See A242909
exp(-LambertW(log(Pi))), solution to x=1/Pi^x. See A073243
exp(-Pi^2/2). See A164003
exp(1): See A001113
exp(1 + 1/2 + 1/3). See A124457
exp(2*Pi/v) * (v/(1+(5^(3/4)/((1+v)/2)^(5/2)-1)^(1/5))-(1+v)/2), where v = sqrt(5). See A091668
exp(3/2). See A067736
exp(7*zeta(3)/(2*Pi^2)). See A242908
exp(exp(-1/2)). See A181180
exp(exp(1) + 1). See A235214
exp(exp(1)-1) See A234473
exp(gamma). See A073004
exp(gamma)/2. See A217597
exp(gamma)/log(2), a conjectural constant related to the asymptotic counting of Mersenne primes, where gamma is Euler's constant. See A244272
exp(gamma)/sqrt(2)*Product_{n>=1} ((2n+1)/(2n))^((-1)^t(n)), a probabilistic counting constant, where gamma is Euler's constant and t(n) = A010060(n) the Thue-Morse sequence. See A244256
exp(Pi) + exp(-Pi). See A175314
exp(Pi) - exp(-Pi). See A175315
exp(Pi). See A039661
exp(Pi*sqrt(163)/3). See A190575
exp(Pi*sqrt(29/2)). See A100379
exp(Pi*sqrt(29/8)). See A100811
exp(Pi*sqrt(89/3)). See A100378
exp(Pi/4). See A160510
exp(Pi^2/12). See A193548
exp(sqrt(2)). See A274540
exp(sqrt(2)/2). See A274541
exp(sqrt(2)/3). See A274542
exp(sqrt(Pi)). See A068470
exp(sqrt(Pi/24)). See A242910
expectation of the maximum of a size 5 sample from a normal (0,1) distribution. See A243453
expectation of the maximum of a size 6 sample from a normal (0,1) distribution. See A243523
expectation of the maximum of a size 7 sample from a normal (0,1) distribution. See A243524
expectation of the maximum of a size 8 sample from a normal (0,1) distribution. See A243961
expected distance from a randomly selected point in a 45-45-90 degree triangle of base length 1 to the vertex of the right angle: (4+sqrt(2)*log(3+2*sqrt(2)))/12. See A245699
expected distance from a randomly selected point in an equilateral triangle of side length 1 to a corner: (4+log(27))/12. See A245700
expected distance from a randomly selected point in an equilateral triangle of side length 1 to its center: (2*sqrt(3) + log(2+sqrt(3)))/18. See A245698
expected distance from a randomly selected point in the unit circle to a point on the boundary: 32/(9*pi). See A245684
expected distance from a randomly selected point in the unit cube to its center. See A135691
expected distance from a randomly selected point in the unit square to its center: (sqrt(2) + log(1 + sqrt(2)))/6. See A103712
expected exit time of a planar Brownian motion from a unit square. See A241026
expected number of iterations of Gaussian reduction of a 2-dimensional lattice. See A074903
expected number of returns to the origin of a random walk on a 4-d lattice. See A242812
expected number of returns to the origin of a random walk on a 5-d lattice. See A242813
expected number of returns to the origin of a random walk on a 6-d lattice. See A242814
expected number of returns to the origin of a random walk on a 7-d lattice. See A242815
expected number of returns to the origin of a random walk on an 8-d lattice. See A242816
expected number of zeros of a+b*e^z satisfying |z|<1, a and b being random complex Gaussian coefficients. See A242052
expected product of two sides of a random Gaussian triangle (in two dimensions). See A249491
expected product of two sides of a random Gaussian triangle in three dimensions. See A249522
expected reciprocal Euclidean distance between two random points in the unit cube. See A242588
expected value of the function max(x-1,0) with respect to the normal distribution (with zero mean and unit standard deviation). See A246822
expected value of the spectral radius of a 2 X 2 matrix, whose entries are independent random variables, uniformly distributed over [0,1]. See A136130
exponential factorial constant Sum_{n>=1} 1/A049384(n). See A080219
exponential growth rate of number of labeled planar graphs on n vertices. See A266390
exponential growth rate of the number of 2-connected planar graphs on n labeled nodes. See A291836
exp^{4*pi*sqrt(163)} (or A060295^4). See A166530
e^((1+sqrt(5))/2). See A139341
e^(-(1+sqrt(5))/2). See A139342
e^(-(cosecant of 1 degree)). See A113792
e^(-(cosine of 1 degree)). See A111717
e^(-(cotangent of 1 degree)). See A113817
e^(-(secant of 1 degree)). See A112267
e^(-(sine of 1 degree)). See A111509
e^(-(sine of 1 radian)). See A117026
e^(-(tan 1 degree)). See A111765
e^(-1/2). See A092605
e^(-1/3). See A092615
e^(-1/4). See A092616
e^(-1/5). See A092618
e^(-1/6). See A092727
e^(-1/7). See A092750
e^(-2*e). See A093619
e^(-3). See A092554
e^(-3*e). See A093624
e^(-4). See A092555
e^(-4*e). See A093626
e^(-5). See A092560
e^(-6). See A092577
e^(-7). See A092578
e^(-e) = (1/e)^e = 1/(e^e) = (reciprocal of A073226). e^(-e) = 0.0659880358453125370767901875... = 0 + 1/15+ 1/6+ 1/2+ 1/13+ 1/1+ 1/3+ 1/6+ 1/2+ ... See A116907
e^(-Pi). See A093580
e^(1+1/e), e=exp(1). See A175993
e^(1/4). See A092042
e^(1/5). See A092514
e^(1/6). See A092515
e^(1/7). See A092516
e^(1/e). See A073229
e^(1/Pi). See A179706
e^(2*e). See A093589
e^(2*EulerGamma). See A091724
e^(2*Pi). See A216707
e^(3*e). See A093592
e^(3*Zeta(3)/(4*log(2)). See A275696
e^(4*e). See A093606
e^(5 Pi)/8 See A181164
e^(cosecant of 1 degree). See A110948
e^(cosine of 1 degree). See A111714
e^(cotangent of 1 degree). See A113816
e^(e - Pi). See A094773
e^(e+pi). See A094771
e^(e/Pi). See A205299
e^(pi i) = -1. e^pi = A039661. Here we are taking digit-by-digit e^pi and summing the partial terms. a(10) = 134480473 = 2^3 + 7^1 + 1^4 + 8^1 + 2^5 + 8^9 + 1^2 + 8^6 + 2^5 + 8^3 is the first prime in this sequence. a(20) = 522945617 is the second prime in this sequence. This sum of digit-wise exponentiation of decimal expansions of real constants is binary transformation of integer sequences, as are the individual terms without summation. See A114605
e^(pi sqrt22)/8 See A181425
e^(pi sqrt43)/24 See A181165
e^(pi sqrt67)/24 See A181166
e^(Pi*42^(1/42)). See A248885
e^(Pi*sqrt(163)). See A060295
e^(Pi*sqrt(43)) See A154841
e^(pi*sqrt(58)). See A169624
e^(Pi*sqrt(67)). See A093436
e^(pi-e). See A094772
e^(Pi/e). See A205298
e^(secant of 1 degree). See A112257
e^(sine of 1 degree). See A111508
e^(sine of 1 radian). See A117025
e^(tan 1 degree). See A111764
e^-gamma * prod (1 - 1/(p^3 - p^2 - p + 1)) where the product is over all primes p. See A218342
e^-gamma. See A080130
e^1000. See A085678
e^2 - 2e. See A091132
e^2 - e. See A090142
e^2 / (e - 1). See A236289
e^2. See A072334
e^2/sqrt(Pi). See A222391
e^3 - 2e^2 + e/2. See A090143
e^3. See A091933
e^4 - 3e^3 + 2e^2 - e/6. See A089139
e^4. See A092426
e^5. See A092511
e^6. See A092512
e^6/(Pi^5+Pi^4), where e = exp(1). See A277117
e^7. See A092513
e^e. See A073226
e^e/(1+e)-1. See A104687
e^e^e. See A073227
e^e^e^e. See A085667
e^Pi + Pi + e. See A019315
e^Pi + Pi^e. See A019314
e^Pi - Pi. See A018938
e^Pi - Pi^e. See A063504
e^Pi*(1+erf(sqrt(Pi))). See A128891
e^Pi/Pi^e. See A277092

### Start of section F

F'(rho), an auxiliary constant associated with the asymptotic number of values of the Euler totient function less than a given number, where the function F and the constant rho are defined in A246746. See A246749
f(0) where f is the functional square root (half-iterate) of exponent, f(f(x))=exp(x). See A199203
F(1/3), where F(x) is the Fabius function. See A272343
factorial of Euler-Mascheroni constant See A178839
factorial of Golden Ratio See A178840
Feigenbaum b constant. See A119277
Feigenbaum bifurcation velocity. See A006890
Feigenbaum c constant. See A119278
Feigenbaum d constant. See A119279
Feigenbaum kappa constant. See A119280
Feigenbaum reduction parameter. See A006891
Feller's alpha coin-tossing constant. See A086253
Feller's beta coin-tossing constant. See A086254
Feller-Tornier constant: product(1 - 2/p^2, p prime). See A065474
Fibonacci binary constant: Sum{i>=0} (1/2)^Fibonacci(i). See A124091
Fibonacci binary number, Sum_{k>0} 1/2^F(k), where F(k) = A000045(k). See A084119
Fibonacci factorial constant. See A062073
Fibonorial(1/2). See A276499
fifth (of 10) decimal selvage number; the n-th digit of a decimal selvage number, x, is equal to the tenths digit of n*x. See A071793
fifth derivative of the infinite power tower function x^x^x... at x = 1/2. See A277526
fifth power of sine of 1 degree. See A111507
fifth root of 2. See A005531
fifth root of 3. See A005532
fifth root of 4. See A005533
fifth root of 5. See A005534
fifth root of cosine of 1 degree. See A111692
fifth root of sine of 1 degree. See A111481
fine-structure constant alpha. See A003673
first (of 10) decimal selvage numbers; the n-th digit of a decimal selvage number, x, is equal to the tenths digit of n*x. See A071789
first Chandrasekhar's nearest neighbor constant. See A213054
first derivative of the infinite power tower function x^x^x... at x = 1/2. See A277522
first derivative of the infinite power tower function x^x^x... at x = 1/4. See A277651
first derivative of the infinite power tower function x^x^x... at x = sqrt(2). See A277559
first Gram point. See A114858
first inflection point of Planck's radiation function. See A133839
first inflexion point of 1/Gamma(x) on the interval x=[0,infinity). See A268464
first local extremum value of the Riemann function zeta(x) along the negative real axis; zeta(A271855). See A271856
first local maximum of x^2*sin(x). See A151924
first Malmsten integral int_{x=1..infinity} log(log(x))/(1 + x^2) dx = int_{x=0..1} log(log(1/x))/(1 + x^2) dx = int_{x=0..infinity} 0.5*log(x)/cosh(x) dx = int_{x=Pi/4..Pi/2} log(log(tan(x))) dx = (1/2)*Pi*log(2) + (3/4)*Pi*log(Pi) - Pi*log(Gamma(1/4)). See A115252
first moment of the reciprocal gamma distribution. See A273017
first negative root of the equation Gamma(x) + Psi(x) = 0, negated. See A268979
first positive solution to exp(1-1/x)/x = 1/2, a binary search tree constant. See A242461
first real inflection point of the jinc function. See A133920
first root of the Weierstrass elliptic function P(1/2 | 1/2, i/2). See A133748
first root of x^sqrt(x+1) = sqrt(x+1)^x. See A001622
first solution of equation cos(x) cosh(x) = -1. See A076417
first solution of equation cos(x) cosh(x) = 1. See A076414
first solution of equation tan(x) = tanh(x). See A076420
first zero of BesselJ(1,z). See A115369
first zero of BesselJ(2,z). See A115370
first zero of BesselJ(3,z). See A115371
first zero of BesselJ(4,z). See A115372
first zero of BesselJ(5,z). See A115373
first zero of the Bessel function J_0(z). See A115368
first zero of the solution to an certain ODE. See A104241
Fisher's percolation exponent in two dimensions, 187/91. See A251420
Flajolet-Odlyzko constant. See A143297
Flajolet-Prodinger constant 'K', a constant related to asymptotically enumerating level number sequences for binary trees. See A249018
flattening (inverse) of the World Geodetic System 1984 ellipsoid, second upgrade. See A125124
Foias' Constant. See A085848
following number: (3/2)^(4/3)^(5/4)^(6/5)^(7/6)^(8/7)^(9/8)^(10/9)^(11/10).... See A118540
following number: 2^(3/2)^(4/3)^(5/4)^(6/5)^(7/6)^(8/7)^(9/8)^(10/9)^(11/10).... See A102575
fourth (of 10) decimal selvage number; the n-th digit of a decimal selvage number, x, is equal to the tenths digit of n*x. See A071792
fourth derivative of the infinite power tower function x^x^x... at x = 1/2, negated. See A277525
fourth Malmsten integral: int_{x=1..infinity} log(log(x))/(1 + x)^2 dx, negated. See A256129
fourth power of sine of 1 degree. See A111506
fourth root of 1/2. See A228497
fourth root of cosine of 1 degree. See A111691
fourth root of sine of 1 degree. See A111461
fractal dimension of boundary of Levy dragon. See A191689
fractal dimension of the Apollonian sphere packing. See A187089
fraction 13240/99999. See A070690
fraction 9099999999923 / 27500000000000 is 0.3309090909062909090... (with the "90" digit pairs infinitely repeating). See A169670
fraction of a population falling within +- 1 standard deviation of the mean, assuming a normal distribution. See A178647
fraction of the full solid angle subtended by a cone with the polar angle of 1 radian. See A243597
fraction of the full solid angle subtended by a cone with the polar angle of 10^(-4) arcseconds. See A243598
fraction of the full solid angle subtended by an equilateral spherical triangle with a side length of 1 radian. See A243711
fraction of the normal distribution that falls within the 3 sigma error bars. See A270712
Fractional part of decimal expansion of sqrt(n) to 3 places. See A027661
fractional part of e^e^e^e. See A225064
fractional part of Sum_{n>=1} cos((n + 1)*Pi)*Zeta(2*n) = Zeta(2) - Zeta(4) + Zeta(6) - Zeta(8) + ..., where Zeta is the Riemann zeta function. See A100554
Frederick Magata's constant. See A092894
Freiman's constant. See A118472
Fresnel cosine integral function at 1. See A099290
Fresnel Integral int_{x=0..infinity} cos(x^3) dx. See A204067
Fresnel integral int_{x=0..infinity} cos(x^4) dx. See A206161
Fresnel Integral int_{x=0..infinity} sin(x^3) dx. See A204068
Fresnel integral int_{x=0..infinity} sin(x^4) dx. See A206769
Fresnel Integral int_{x=0..infinity} x*cos(x^3) dx. See A205885
Fresnel Integral int_{x=0..infinity} x*sin(x^3) dx See A206160
Fresnel sine integral function at 1. See A099289
function F(x) evaluated at the constant x that satisfies: F(x) - x*F'(x) = 0, where F(x) = Sum_{n>=0} x^(n*(n+1)/2). See A106334

### Start of section G

g(1)+g(2)-g(4)-g(5), where g(k) = sum(1/(6*m+k)^2,m=0..infinity). See A086722
g(1)-g(2)+g(4)-g(5), where g(k) = sum(1/(6*m+k)^2, m >= 0). See A086724
G(1/12), a generalized Catalan constant. See A257437
G(1/2) where G is the Barnes G-function. See A087014
G(1/3) where G is the Barnes G-function. See A252798
G(1/3), a generalized Catalan constant. See A257436
G(1/4) where G is the Barnes G-function. See A087013
G(1/5), a generalized Catalan constant. See A257438
G(1/6) where G is the Barnes G-function. See A252850
G(1/6), a generalized Catalan constant. See A257435
G(2/3) where G is the Barnes G-function. See A252799
G(3/2), where G is the Barnes G-function. See A087016
G(3/4) where G is the Barnes G-function. See A087015
G(5/2) where G is the Barnes G-function. See A087017
G(5/4) where G is the Barnes G-function. See A256717
G(5/6) where G is the Barnes G-function. See A252851
G(b)-G(a), where b->infinity, a->0+ and G(x) is the antiderivative of x/(x^x). See A098687
G*h^2/c^4 in SI units, where G is the Newtonian constant of gravitation, h is the Planck constant and c is the speed of light in vacuum. See A279390
G/(3*c^2), where G is the Newtonian constant of gravitation and c is the speed of light in vacuum, in SI units. See A236629
G/2 + (1/8)*Pi*log(2), where G is Catalan's constant (often also denoted K). See A098459
G/c^4 in s^2/(kg * m), where G is the gravitational constant and c = 299792458 m/s is the speed of light in vacuum. See A228818
gamma: See A001620
gamma + 1/gamma, where gamma is Euler-Mascheroni constant. See A098989
gamma - Ei(-1). See A239069
gamma = 8*lambda^2, a critical threshold of a boundary value problem, where lambda is Laplace's limit constant A033259. See A248916
Gamma'(1). See A291486
Gamma(1). See A081855
gamma', the analog of Euler's constant when 1/x is replaced by 1/(x*log(x)). See A241005
Gamma(-3/2), where Gamma is Euler's gamma function. See A245886
Gamma(-5/2), where Gamma is Euler's gamma function. See A245887
gamma(1) = 5/3 See A020793
Gamma(1+sqrt(2)). See A186631
Gamma(1+sqrt(3)). See A186691
Gamma(1+sqrt(5)). See A186692
Gamma(1+sqrt(6)). See A186693
Gamma(1/10). See A256191
Gamma(1/11). See A256192
Gamma(1/12). See A203140
Gamma(1/16). See A203139
Gamma(1/24). See A203138
Gamma(1/3). See A073005
Gamma(1/3)^3/2^(4/3)/Pi. See A113477
Gamma(1/3)^3/Pi^2. See A113273
Gamma(1/4). See A068466
Gamma(1/4)/(2*Pi^(3/4)). See A091343
Gamma(1/4)^4/(4*Pi^3). See A091670
Gamma(1/4)^4/Pi^3. See A113272
Gamma(1/48). See A203137
Gamma(1/5). See A175380
Gamma(1/6). See A175379
Gamma(1/7). See A220086
Gamma(1/8). See A203142
Gamma(1/9). See A256190
Gamma(1/Pi). See A257955
Gamma(11/4). See A257095
gamma(2) = 7/5. See A274981
Gamma(2/3). See A073006
Gamma(2/5). See A246745
Gamma(2/7). See A220605
Gamma(3/4). See A068465
Gamma(3/7). See A220608
Gamma(3/8). See A203143
Gamma(4/7). See A220609
Gamma(5/2), where Gamma is Euler's gamma function. See A245884
Gamma(5/48). See A203141
Gamma(5/6). See A203145
Gamma(5/7). See A220606
Gamma(5/8). See A203144
Gamma(6/7). See A220607
Gamma(7/2), where Gamma is Euler's gamma function. See A245885
Gamma(7/8). See A203146
Gamma(9/4). See A257094
Gamma(delta)^2 where delta is the Feigenbaum bifurcation velocity constant (A006890). See A102817
Gamma(gamma). See A202412
Gamma(log(2)). See A269557
Gamma(Pi). See A269545
gamma*Pi See A203817
gamma-2*Ei(-1), one of the Tauberian constants, where Ei is the exponential integral function. See A249385
gamma/3+Pi*sqrt(3)/18+log(3)/6. See A256425
gamma/log(2)^2. See A278326
gamma^(1/e), where gamma is the Euler-Mascheroni constant. See A182551
gamma^(exp(1). See A073018
gamma^3, where gamma is the Euler-Mascheroni constant. See A182497
gamma^Pi, where gamma is the Euler-Mascheroni constant. See A182470
gamma_1(1/12), the first generalized Stieltjes constant at 1/12 (negated). See A255189
gamma_1(1/2), the first generalized Stieltjes constant at 1/2 (negated). See A254327
gamma_1(1/3), the first generalized Stieltjes constant at 1/3 (negated). See A254331
gamma_1(1/4), the first generalized Stieltjes constant at 1/4 (negated). See A254347
gamma_1(1/5), the first generalized Stieltjes constant at 1/5 (negated). See A251866
gamma_1(1/6), the first generalized Stieltjes constant at 1/6 (negated). See A254349
gamma_1(1/8), the first generalized Stieltjes constant at 1/8 (negated). See A255188
gamma_1(2/3), the first generalized Stieltjes constant at 2/3 (negated). See A254345
gamma_1(3/4), the first generalized Stieltjes constant at 3/4 (negated). See A254348
gamma_1(5/6), the first generalized Stieltjes constant at 5/6 (negated). See A254350
gamma_2, a lattice sum constant, analog of Euler's constant for two-dimensional lattices. See A247043
gamma_3, a lattice sum constant, analog of Euler's constant for 3-dimensional lattices. See A247277
Gauss-Kuzmin-Wirsing constant. See A038517
Gaussian gravitational constant in the astronomical system of units. See A248363
Gaussian Hypergeometric Function 2F1(1, 3; 5/2; x) at x=1/4. See A263498
Gaussian Hypergeometric Function 2F1(2,2; 5/2; x) at x=1/4. See A263497
generalized continued fraction with terms sigma(n)/n for n>=1. See A254061
generalized Euler constant -gamma(0,2). See A239097
generalized Euler constant gamma(1,12). See A256783
generalized Euler constant gamma(1,2). See A228725
generalized Euler constant gamma(1,3). See A256425
generalized Euler constant gamma(1,4). See A256778
generalized Euler constant gamma(1,5). See A256779
generalized Euler constant gamma(1,8). See A256781
generalized Euler constant gamma(2,3). See A256843
generalized Euler constant gamma(2,4). See A256845
generalized Euler constant gamma(2,5). See A256780
generalized Euler constant gamma(3,3) (negated). See A256844
generalized Euler constant gamma(3,4) (negated). See A256846
generalized Euler constant gamma(3,5) (negated). See A256848
generalized Euler constant gamma(3,8). See A256782
generalized Euler constant gamma(4,4) (negated). See A256847
generalized Euler constant gamma(4,5) (negated). See A256849
generalized Euler constant gamma(5,12) (negated). See A256784
generalized Euler constant gamma(5,5) (negated). See A256850
generalized Glaisher-Kinkelin constant A(10). See A266557
generalized Glaisher-Kinkelin constant A(11). See A266558
generalized Glaisher-Kinkelin constant A(12). See A266559
generalized Glaisher-Kinkelin constant A(13). See A260662
generalized Glaisher-Kinkelin constant A(14). See A266560
generalized Glaisher-Kinkelin constant A(15). See A266562
generalized Glaisher-Kinkelin constant A(16). See A266563
generalized Glaisher-Kinkelin constant A(17). See A266564
generalized Glaisher-Kinkelin constant A(18). See A266565
generalized Glaisher-Kinkelin constant A(19). See A266566
generalized Glaisher-Kinkelin constant A(2). See A243262
generalized Glaisher-Kinkelin constant A(20). See A266567
generalized Glaisher-Kinkelin constant A(3). See A243263
generalized Glaisher-Kinkelin constant A(4). See A243264
generalized Glaisher-Kinkelin constant A(5). See A243265
generalized Glaisher-Kinkelin constant A(6). See A266553
generalized Glaisher-Kinkelin constant A(7). See A266554
generalized Glaisher-Kinkelin constant A(8). See A266555
generalized Glaisher-Kinkelin constant A(9). See A266556
generalized hypergeometric function 3F2(1/2, 3/2, 5/2; 2, 2;x) at x=1/4. See A263493
generalized hypergeometric function 3F2(1/2,1/2,1/2 ; 1,1; x) at x=1/4. See A263490
generalized hypergeometric function 3F2(1/2,1/2,1/2; 3/2,3/2; x) at x=1/2. See A263353
generalized hypergeometric function 3F2(1/2,1/2,3/2 ; 1,2 ; x) at x=1/4. See A263492
generalized hypergeometric function 3F2(1/2,1/2,3/2; 1,1;x) at x=1/4. See A263491
generalized hypergeometric function 3F2(1/2,3/2,3/2; 5/2,5/2;x) at x=1/2. See A263354
generalized hypergeometric function 3F2(3/2, 3/2, 3/2; 1, 2; x) at x=1/4. See A263494
generalized hypergeometric function 3F2(3/2, 3/2, 3/2; 2, 2; x) at x=1/4. See A263495
generalized hypergeometric function 3F2(3/2, 3/2, 5/2; 2, 2; x) at x=1/4. See A263496
generalized Stirling constant. See A217594
generating constant c of A139244. See A260315
geocentric gravitational constant (mass of Earth's atmosphere included) of the World Geodetic System 1984 Ellipsoid, second upgrade. See A125125
Gieseking's constant. See A143298
Given an equilateral triangle T, partition each side (with the same orientation) into segments exhibiting the Golden Ratio. Let t be the resulting internal equilateral triangle t. Sequence gives decimal expansion of ratio of areas T/t. See A205769
Glaisher-Kinkelin constant A. See A074962
goat tether length to graze half a unit field. See A133731
Goh-Schmutz constant. See A143300
Goldberg Zero-One constant A(2,1). See A249186
Goldberg Zero-One constant A(3,1). See A249187
Goldberg Zero-One constant A(4,1). See A249188
golden angle in degrees, 360(2-phi). See A096627
golden angle in radians: (4-2*Phi)*Pi. See A131988
golden ratio phi (or tau) = (1 + sqrt(5))/2. See A001622
golden ratio powered to itself. See A144749
Golomb-Dickman constant. See A084945
googol-th prime. See A274767
gravitoid constant. See A208745
greater of two values of x satisfying 2*x^2=tan(x) and 0<x<pi/2. See A200680
greater of two values of x satisfying 3*x^2-1=tan(x) and 0<x<pi/2. See A200615
greater of two values of x satisfying 3*x^2=tan(x) and 0<x<pi/2. See A200682
greater of two values of x satisfying 4*x^2-1=tan(x) and 0<x<pi/2. See A200617
greater of two values of x satisfying 4*x^2=tan(x) and 0<x<pi/2. See A200684
greater of two values of x satisfying 5*x^2-1=tan(x) and 0<x<pi/2. See A200621
greater of two values of x satisfying 5*x^2-2=tan(x) and 0<x<pi/2. See A200623
greater of two values of x satisfying 5*x^2-3=tan(x) and 0<x<pi/2. See A200625
greater of two values of x satisfying 5*x^2-4=tan(x) and 0<x<pi/2. See A200627
greater of two values of x satisfying 6*x^2-1=tan(x) and 0<x<pi/2. See A200634
greater of two values of x satisfying 6*x^2-5=tan(x) and 0<x<pi/2. See A200636
greatest minimal separation between ten points in a unit circle. See A281115
greatest minimal separation between ten points in a unit square. See A281065
greatest negative number x satisfying 2*x^2=e^(-x). See A201937
greatest number x satisfying 2*x^2=e^(-x). See A201938
greatest real fixed point of Gamma(x). (The only other positive fixed point is 1.) See A218802
greatest root of 6x^3 - 6x - 2 = 0. See A199589
greatest x having 2*x^2+2x=3*cos(x). See A198127
greatest x having 2*x^2+2x=cos(x). See A198125
greatest x having 2*x^2+3x=2*cos(x). See A198131
greatest x having 2*x^2+3x=3*cos(x). See A198133
greatest x having 2*x^2+3x=4*cos(x). See A198135
greatest x having 2*x^2+3x=cos(x). See A198129
greatest x having 2*x^2+x=2*cos(x). See A198115
greatest x having 2*x^2+x=3*cos(x). See A198117
greatest x having 2*x^2+x=4*cos(x). See A198119
greatest x having 2*x^2+x=cos(x). See A198113
greatest x having 2*x^2-3x=-cos(x). See A198121
greatest x having 2*x^2-4x=-3*cos(x). See A198137
greatest x having 2*x^2-4x=-cos(x). See A198123
greatest x having 3*x^2+2x=2*cos(x). See A198225
greatest x having 3*x^2+2x=4*cos(x). See A198229
greatest x having 3*x^2+2x=cos(x). See A198223
greatest x having 3*x^2+3x=2*cos(x). See A198233
greatest x having 3*x^2+3x=4*cos(x). See A198235
greatest x having 3*x^2+3x=cos(x). See A198231
greatest x having 3*x^2+4x=2*cos(x). See A198239
greatest x having 3*x^2+4x=3*cos(x). See A198241
greatest x having 3*x^2+4x=4*cos(x). See A198139
greatest x having 3*x^2+4x=cos(x). See A198237
greatest x having 3*x^2+x=2*cos(x). See A198217
greatest x having 3*x^2+x=3*cos(x). See A198219
greatest x having 3*x^2+x=4*cos(x). See A198221
greatest x having 3*x^2+x=cos(x). See A198215
greatest x having 3*x^2-4x=-cos(x). See A198346
greatest x having 4*x^2+2x=3*cos(x). See A198360
greatest x having 4*x^2+2x=cos(x). See A198358
greatest x having 4*x^2+3x=2*cos(x). See A198364
greatest x having 4*x^2+3x=3*cos(x). See A198366
greatest x having 4*x^2+3x=4*cos(x). See A198368
greatest x having 4*x^2+3x=cos(x). See A198362
greatest x having 4*x^2+4x=3*cos(x). See A198372
greatest x having 4*x^2+4x=cos(x). See A198370
greatest x having 4*x^2+x=2*cos(x). See A198352
greatest x having 4*x^2+x=3*cos(x). See A198354
greatest x having 4*x^2+x=4*cos(x). See A198356
greatest x having 4*x^2+x=cos(x). See A198350
greatest x having 4*x^2-4x=cos(x). See A198374
greatest x having x^2+2x=2*cos(x). See A197844
greatest x having x^2+2x=3*cos(x). See A197846
greatest x having x^2+2x=4*cos(x). See A197848
greatest x having x^2+2x=cos(x). See A197842
greatest x having x^2+3x=2*cos(x). See A198105
greatest x having x^2+3x=3*cos(x). See A198107
greatest x having x^2+3x=4*cos(x). See A198109
greatest x having x^2+3x=cos(x). See A198103
greatest x having x^2-2x=-2*cos(x). See A197850
greatest x having x^2-2x=-3*cos(x). See A198141
greatest x having x^2-2x=-cos(x). See A197820
greatest x having x^2-3x=-2*cos(x). See A198099
greatest x having x^2-3x=-3*cos(x). See A198143
greatest x having x^2-3x=-cos(x). See A197831
greatest x having x^2-4x=-2*cos(x). See A198101
greatest x having x^2-4x=-3*cos(x). See A198145
greatest x having x^2-4x=-cos(x). See A197840
greatest x satisfying -x^2+2 = e^x. See A201752
greatest x satisfying -x^2+3=e^x. See A201754
greatest x satisfying -x^2+4=e^x. See A201756
greatest x satisfying -x^2+5=e^x. See A201758
greatest x satisfying -x^2+6=e^x. See A201760
greatest x satisfying -x^2+7=e^x. See A201762
greatest x satisfying -x^2+8=e^x. See A201764
greatest x satisfying -x^2+9=e^x. See A201766
greatest x satisfying 10*x^2-1=csc(x) and 0<x<pi. See A201681
greatest x satisfying 10*x^2-1=sec(x) and 0<x<pi. See A201530
greatest x satisfying 10*x^2=csc(x) and 0<x<pi. See A201662
greatest x satisfying 10*x^2=sec(x) and 0<x<pi. See A201423
greatest x satisfying 10-x^2=e^x. See A201768
greatest x satisfying 2*x^2-1=csc(x) and 0<x<pi. See A201665
greatest x satisfying 2*x^2-2*cos(x)=3*sin(x). See A200119
greatest x satisfying 2*x^2-2*cos(x)=sin(x). See A200117
greatest x satisfying 2*x^2-3*cos(x)=2*sin(x). See A200123
greatest x satisfying 2*x^2-3*cos(x)=3*sin(x). See A200125
greatest x satisfying 2*x^2-3*cos(x)=4*sin(x). See A200127
greatest x satisfying 2*x^2-3*cos(x)=sin(x). See A200121
greatest x satisfying 2*x^2-4*cos(x)=3*sin(x). See A200131
greatest x satisfying 2*x^2-4*cos(x)=sin(x). See A200129
greatest x satisfying 2*x^2-cos(x)=2*sin(x). See A200110
greatest x satisfying 2*x^2-cos(x)=3*sin(x). See A200112
greatest x satisfying 2*x^2-cos(x)=4*sin(x). See A200115
greatest x satisfying 2*x^2-cos(x)=sin(x). See A200108
greatest x satisfying 2*x^2=csc(x) and 0<x<pi. See A201584
greatest x satisfying 2*x^2=sec(x) and 0<x<pi. See A201407
greatest x satisfying 3*x^2+cos(x)=4*sin(x). See A200007
greatest x satisfying 3*x^2-1=csc(x) and 0<x<pi. See A201667
greatest x satisfying 3*x^2-1=sec(x) and 0<x<pi. See A201516
greatest x satisfying 3*x^2-2*cos(x)=2*sin(x). See A200232
greatest x satisfying 3*x^2-2*cos(x)=3*sin(x). See A200234
greatest x satisfying 3*x^2-2*cos(x)=4*sin(x). See A200236
greatest x satisfying 3*x^2-2*cos(x)=sin(x). See A200230
greatest x satisfying 3*x^2-3*cos(x)=2*sin(x). See A200240
greatest x satisfying 3*x^2-3*cos(x)=4*sin(x). See A200242
greatest x satisfying 3*x^2-3*cos(x)=sin(x). See A200238
greatest x satisfying 3*x^2-3*cos(x)=sin(x). See A200278
greatest x satisfying 3*x^2-4*cos(x)=2*sin(x). See A200280
greatest x satisfying 3*x^2-4*cos(x)=3*sin(x). See A200282
greatest x satisfying 3*x^2-4*cos(x)=4*sin(x). See A200284
greatest x satisfying 3*x^2-cos(x)=2*sin(x). See A200224
greatest x satisfying 3*x^2-cos(x)=3*sin(x). See A200226
greatest x satisfying 3*x^2-cos(x)=4*sin(x). See A200228
greatest x satisfying 3*x^2-cos(x)=sin(x). See A200133
greatest x satisfying 3*x^2=csc(x) and 0<x<pi. See A201586
greatest x satisfying 3*x^2=sec(x) and 0<x<pi. See A201409
greatest x satisfying 3x=e^x. See A202352
greatest x satisfying 4*x^2+cos(x)=4*sin(x). See A200009
greatest x satisfying 4*x^2-1=csc(x) and 0<x<pi. See A201669
greatest x satisfying 4*x^2-1=sec(x) and 0<x<pi. See A201518
greatest x satisfying 4*x^2-2*cos(x)=3*sin(x). See A200296
greatest x satisfying 4*x^2-2*cos(x)=sin(x). See A200294
greatest x satisfying 4*x^2-3*cos(x)=2*sin(x). See A200298
greatest x satisfying 4*x^2-3*cos(x)=3*sin(x). See A200302
greatest x satisfying 4*x^2-3*cos(x)=4*sin(x). See A200304
greatest x satisfying 4*x^2-3*cos(x)=sin(x). See A200300
greatest x satisfying 4*x^2-4*cos(x)=3*sin(x). See A200308
greatest x satisfying 4*x^2-4*cos(x)=sin(x). See A200306
greatest x satisfying 4*x^2-cos(x)=2*sin(x). See A200288
greatest x satisfying 4*x^2-cos(x)=3*sin(x). See A200290
greatest x satisfying 4*x^2-cos(x)=4*sin(x). See A200292
greatest x satisfying 4*x^2=csc(x) and 0<x<pi. See A201588
greatest x satisfying 4*x^2=sec(x) and 0<x<pi. See A201411
greatest x satisfying 5*x^2-1 = sec(x) and 0 < x < Pi. See A201520
greatest x satisfying 5*x^2-1=csc(x) and 0<x<pi. See A201671
greatest x satisfying 5*x^2=csc(x) and 0<x<pi. See A201590
greatest x satisfying 5*x^2=sec(x) and 0<x<pi. See A201413
greatest x satisfying 6*x^2-1=csc(x) and 0<x<pi. See A201673
greatest x satisfying 6*x^2-1=sec(x) and 0<x<pi. See A201522
greatest x satisfying 6*x^2=csc(x) and 0<x<pi. See A201653
greatest x satisfying 6*x^2=sec(x) and 0<x<pi. See A201415
greatest x satisfying 7*x^2-1=csc(x) and 0<x<pi. See A201675
greatest x satisfying 7*x^2-1=sec(x) and 0<x<pi. See A201524
greatest x satisfying 7*x^2=csc(x) and 0<x<pi. See A201655
greatest x satisfying 7*x^2=sec(x) and 0<x<pi. See A201417
greatest x satisfying 8*x^2-1=csc(x) and 0<x<pi. See A201677
greatest x satisfying 8*x^2-1=sec(x) and 0<x<pi. See A201526
greatest x satisfying 8*x^2=csc(x) and 0<x<pi. See A201657
greatest x satisfying 8*x^2=sec(x) and 0<x<pi. See A201419
greatest x satisfying 9*x^2-1=csc(x) and 0<x<pi. See A201679
greatest x satisfying 9*x^2-1=sec(x) and 0<x<pi. See A201528
greatest x satisfying 9*x^2=csc(x) and 0<x<pi. See A201659
greatest x satisfying 9*x^2=sec(x) and 0<x<pi. See A201421
greatest x satisfying x+3*cos(x)=0. See A199604
greatest x satisfying x+4*cos(x)=0. See A199612
greatest x satisfying x=1/x+cot(1/x). See A196500
greatest x satisfying x=3*sin(x). See A199467
greatest x satisfying x^2+10=csc(x) and 0<x<pi. See A201581
greatest x satisfying x^2+1=csc(x) and 0<x<pi. See A201563
greatest x satisfying x^2+2*cos(x)=3*sin(x). See A199956
greatest x satisfying x^2+2*cos(x)=4*sin(x). See A199958
greatest x satisfying x^2+2=csc(x) and 0<x<pi. See A201565
greatest x satisfying x^2+3*cos(x)=3*sin(x). See A199960
greatest x satisfying x^2+3*cos(x)=4*sin(x). See A199962
greatest x satisfying x^2+3*sin(x)=-1. See A199053
greatest x satisfying x^2+3*x*cos(x)=1. See A199183
greatest x satisfying x^2+3*x*cos(x)=2*sin(x). See A199608
greatest x satisfying x^2+3*x*cos(x)=2. See A199185
greatest x satisfying x^2+3*x*cos(x)=3*sin(x). See A199610
greatest x satisfying x^2+3*x*cos(x)=sin(x). See A199606
greatest x satisfying x^2+3=csc(x) and 0<x<pi. See A201567
greatest x satisfying x^2+3x+1=e^x. See A201896
greatest x satisfying x^2+3x+1=e^x. See A201899
greatest x satisfying x^2+4*cos(x)=3*sin(x). See A199964
greatest x satisfying x^2+4*cos(x)=4*sin(x). See A199966
greatest x satisfying x^2+4*x*cos(x)=2*sin(x). See A199616
greatest x satisfying x^2+4*x*cos(x)=3*sin(x). See A199618
greatest x satisfying x^2+4*x*cos(x)=4*sin(x). See A199620
greatest x satisfying x^2+4*x*cos(x)=sin(x). See A199614
greatest x satisfying x^2+4=csc(x) and 0<x<pi. See A201569
greatest x satisfying x^2+4x+1=e^x. See A201904
greatest x satisfying x^2+4x+2=e^x. See A201907
greatest x satisfying x^2+4x+3=e^x. See A201926
greatest x satisfying x^2+4x+4=e^x. See A201929
greatest x satisfying x^2+5=csc(x) and 0<x<pi. See A201571
greatest x satisfying x^2+5x+1=e^x. See A201932
greatest x satisfying x^2+5x+2=e^x. See A201935
greatest x satisfying x^2+6=csc(x) and 0<x<pi. See A201573
greatest x satisfying x^2+7=csc(x) and 0<x<pi. See A201575
greatest x satisfying x^2+8=csc(x) and 0<x<pi. See A201577
greatest x satisfying x^2+9=csc(x) and 0<x<pi. See A201580
greatest x satisfying x^2+cos(x)=2*sin(x). See A199950
greatest x satisfying x^2+cos(x)=3*sin(x). See A199952
greatest x satisfying x^2+cos(x)=3*sin(x). See A200003
greatest x satisfying x^2+cos(x)=4*sin(x). See A199954
greatest x satisfying x^2+cos(x)=4*sin(x). See A200005
greatest x satisfying x^2-1=csc(x) and 0<x<pi. See A201663
greatest x satisfying x^2-2*cos(x)=2*sin(x). See A200021
greatest x satisfying x^2-2*cos(x)=3*sin(x). See A200023
greatest x satisfying x^2-2*cos(x)=4*sin(x). See A200025
greatest x satisfying x^2-2*cos(x)=sin(x). See A200019
greatest x satisfying x^2-2*x*sin(x)=-2*cos(x). See A199458
greatest x satisfying x^2-2*x*sin(x)=-3*cos(x). See A199457
greatest x satisfying x^2-2*x*sin(x)=-cos(x). See A199459
greatest x satisfying x^2-2=csc(x) and 0<x<pi. See A201683
greatest x satisfying x^2-3*cos(x)=2*sin(x). See A200094
greatest x satisfying x^2-3*cos(x)=3*sin(x). See A200096
greatest x satisfying x^2-3*cos(x)=4*sin(x). See A200098
greatest x satisfying x^2-3*cos(x)=sin(x). See A200027
greatest x satisfying x^2-3*x*sin(x)=-2*cos(x). See A199465
greatest x satisfying x^2-3*x*sin(x)=-3*cos(x). See A199464
greatest x satisfying x^2-3*x*sin(x)=-cos(x). See A199466
greatest x satisfying x^2-3=csc(x) and 0<x<pi. See A201736
greatest x satisfying x^2-4*cos(x)=2*sin(x). See A200102
greatest x satisfying x^2-4*cos(x)=3*sin(x). See A200104
greatest x satisfying x^2-4*cos(x)=4*sin(x). See A200106
greatest x satisfying x^2-4*cos(x)=sin(x). See A200100
greatest x satisfying x^2-4*x*cos(x)=2*sin(x). See A199736
greatest x satisfying x^2-4*x*cos(x)=3*sin(x). See A199734
greatest x satisfying x^2-4*x*cos(x)=4*sin(x). See A199732
greatest x satisfying x^2-4*x*cos(x)=sin(x). See A199738
greatest x satisfying x^2-4=csc(x) and 0<x<pi. See A201738
greatest x satisfying x^2-cos(x)=2*sin(x). See A200013
greatest x satisfying x^2-cos(x)=3*sin(x). See A200015
greatest x satisfying x^2-cos(x)=4*sin(x). See A200017
greatest x satisfying x^2-cos(x)=sin(x). See A200011
greatest x satisfying x^2=csc(x) and 0<x<pi. See A201582
greatest x>0 satisfying sin(1/x)=1/sqrt(1+x^2). See A196505
greatst x satisfying cos(x)=1/sqrt(1+x^2). See A196503
Greenfield-Nussbaum constant, a constant which is the term z(1) in the quadratic recurrence z(0)=1, z(n) = z(n-1)+z(n-2)^2, such that all terms of the bi-infinite sequence z(n) (n = ..., -2, -1, 0, 1, 2, ...) are positive. See A244045
Grossman's constant. See A085835
Grothendieck's constant Pi/(2*log(1+sqrt(2))). See A088367
growth constant C for dimer model on square grid. See A097469
growth constant for the partial sums of maximal unitary squarefree divisors. See A191622
growth constant in random Fibonacci sequence. See A137421
growth constant of sequences x_{n+1} = x_n + c_{n+1} *x_{n-1} with normally distributed random coefficients c_n. See A201506
g_1 (smaller of two positive constants) such that Gamma[g_1]=Pi. g_1 = 0.2863639737... See A146943
g_2 (larger of two positive constants) such that Gamma[g_2]=Pi. g_2 = 3.448618111... See A146944

### Start of section H

h = prod(sqrt(p(p-1))*log(1/(1-1/p))) where p runs through the primes. See A083281
H(1/2,1), a constant appearing in the asymptotic variance of the largest component of random mappings on n symbols, expressed as H(1/2,1)*n^2. See A261873
H, an auxiliary constant used to evaluate some Ising-related constants on triangular and hexagonal lattices (negated). See A242967
half of a single half-wave constant x. See A254604
Hall and Tenenbaum constant. See A072112
Hall-Montgomery constant. See A143301
hard hexagon entropy constant. See A085851
hard square entropy constant. See A085850
Hardy-Littlewood constant C_5 = Product_{p prime > 5} 1/(1-1/p)^5 (1-5/p). See A269843
Hardy-Littlewood constant C_6 = Product_{p prime > 6} 1/(1-1/p)^6 (1-6/p). See A269846
Hardy-Littlewood constant C_7 = Product_{p prime > 7} 1/(1-1/p)^7 (1-7/p). See A271742
Hardy-Littlewood constant for prime quadruples. See A061642
Hardy-Littlewood constant product(1-(3*p-1)/(p-1)^3, p prime >= 5). See A065418
Hardy-Littlewood constant product(1-(6*p^2-4*p+1)/(p-1)^4, p prime >= 5). See A065419
Hartree energy in Joules. See A229938
Hausdorff dimension of Apollonian packing of circles. See A052483
Hausdorff dimension of E_{1,2}: set of irrationals whose continued fraction expansion consists only of 1's and 2's. See A279903
Hausdorff dimension of the Feigenbaum attractor and repeller. See A187488
Hausdorff dimension of the Heighway-Harter dragon curve boundary. See A272031
Hausdorff dimension of the Rauzy fractal boundary. See A272408
Hayman's constant in Landau's Theorem. See A249189
Heath-Brown-Moroz Constant. See A118228
height parameter of Graham's biggest little hexagon. See A111971
heliocentric gravitational constant in SI units. See A255820
heptanacci constant. See A118428
Hermite's constant gamma_6 = 2/3^(1/6). See A246184
Hermite's constant gamma_7 = 2^(6/7). See A246722
Hexadecimal expansion of e. See A170873
Hexadecimal expansion of Euler-Mascheroni constant gamma. See A170874
hexanacci constant. See A118427
higher order exponential integral constant gamma(2,1). See A163930
higher-order exponential integral E(x, m=2, n=1) at x=1. See A163931
Hlawka's Schneckenkonstante K = -2.157782... (negated). See A105459
Hoffman's approximation to Pi. See A271452
Hopf's constant. See A240907
hydrogen (1H) mass in kg. See A248650
hyperbolic cosine integral at 1. See A099284
hyperbolic sine integral at 1. See A099283
hyperbolic volume of the figure eight knot complement. See A091518
Hypergeometric2F1[ -(1/4),3/4,1,1] = sqrt(Pi)/(Gamma[1/4]*Gamma[5/4]). See A105372
Hypergeometric2F1[1, 1/8, 9/8, 1/16] = 1.00718... used by BBP Pi formula See A145963
HypergeometricPFQ[{1,1,1},{1/3,2/3},1/27]. See A091683
hz = limit_{k -> infinity} 1 + k - Sum_{j = -k..k} exp(-2^j). See A158468
h^2, where h is the Planck constant in SI units. See A279386
h^2/F_P in SI units, where h is the Planck constant and F_P is the Planck force. See A279390
H_2, the analog of Madelung's constant for the planar hexagonal lattice. See A246966
h_3, a constant related to certain evaluations of the gamma function from elliptic integrals. See A243308
h_e(1/17), where h_e(x) is the even infinite power tower function. See A194347
h_o(1/17), where h_o(x) is the odd infinite power tower function. See A194346

### Start of section I

I, a constant appearing (as I^2) in the asymptotic variance of the area of the convex hull of random points in the unit square. See A248589
I3(u,v) = A248897/AG3(u,v) for u=1, v=2. See A257096
I3(u,v) = A248897/AG3(u,v) for u=2, v=1. See A257097
golden ratio divided by 5 = phi/5 = (1 + sqrt(5))/10. See A134945
Im(tan(1+I)). See A170937
imaginary error function at 1. See A099288
imaginary part (negated) of the limit (2N -> infinity) of Integral_{1..2N} exp(i*Pi*x)*x^(1/x) dx. See A255728
imaginary part of (-Exp[ -1])^(-Exp[ -1]), negated. See A119421
imaginary part of -(i^e). See A211884
imaginary part of -E_1(i), i being the imaginary unit. See A257535
imaginary part of -i^e is in A211884. See A211883
imaginary part of -i^Pi. See A222129
imaginary part of -Pi^(I*Pi). See A236099
imaginary part of 1/i^Pi, where i=sqrt(-1). See A222129
imaginary part of 2nd nontrivial zero of Riemann zeta function. See A065434
imaginary part of 3rd nontrivial zero of Riemann zeta function. See A065452
imaginary part of 4th nontrivial zero of Riemann zeta function. See A065453
imaginary part of 5th nontrivial zero of Riemann zeta function. See A192492
imaginary part of a fixed point of the logarithmic integral li(z) in C. See A276763
imaginary part of exp(i/Pi), or sin(1/Pi). See A237186
imaginary part of e^(i/e). See A212437
imaginary part of e^i. See A049469
imaginary part of first nontrivial zero of Riemann zeta function. See A058303
imaginary part of i^(1/4). See A182168
imaginary part of I^(1/7), or sin(Pi/14). See A232736
imaginary part of I^(1/8), or sin(Pi/16). See A232738
imaginary part of i^(i^i), that is, Im(i^(i^i)) = 0.a(1)a(2)... See A116191
imaginary part of li(i), i being the imaginary unit. See A257818
imaginary part of log_Pi(i), where i is the imaginary unit. See A182502
imaginary part of Pi^(I/Pi). See A236101
imaginary part of Pi^i, where i=sqrt(-1). See A222131
imaginary part of solution to z = log z. See A059527
imaginary part of Sum_{k>=1} e^(i*k)/k^2. See A096418
imaginary part of the continued fraction i/(e + i/(e + i/(...))). See A263209
imaginary part of the continued fraction i/(Pi+i/(Pi+i/(...))). See A263211
imaginary part of the Dirichlet function eta(z), at z=i, the imaginary unit. See A271524
imaginary part of the first Riemann zeta zero modulo Pi. See A271571
imaginary part of the fixed point of -exp(z) in C congruent with the branch K=1 of log(z)+2*Pi*K*i. See A276760
imaginary part of the fixed point of exp(z) in C congruent with the branch K=1 of log(z)+2*Pi*K*i. See A277682
imaginary part of the infinite nested power (1+(1+(1+...)^i)^i)^i, with i being the imaginary unit. See A272876
imaginary part of the infinite power tower of i. See A077590
imaginary part of the limit of f(f(...f(0)...)) where f(z)=sqrt(i+z). See A156590
imaginary part of the solution of z = (i+z)^i in C (i is the imaginary unit). See A290410
imaginary part of z0, the smallest nonzero first-quadrant solution of z = Sin(z). See A138283
imaginary part of z0, the smallest second-quadrant solution of z = Cos(z). See A138285
In other words, given n > 1, the decimal expansion of 1/(10^n - 3) contains the first n powers of 7 (including 7^0 = 1) separated by n - 1 zeroes. See A021097
In the decimal expansion of n, replace each odd digit with 1 and each even digit with 2. See A065031
In the decimal expansion of Pi, balanced digits are much more rare than weak or strong ones. See A108533
infinite double sum S = Sum_{m>=1} (Sum_{n>=1} 1/(m^2*n*(m+n)^3)). See A259928
infinite Fibonacci word, interpreted as a binary expansion. See A228249
infinite nested radical sqrt(-1+sqrt(1+sqrt(-1+sqrt(1+ ... ))). See A272874
infinite nested radical sqrt(F_0 + sqrt(F_1 + sqrt(F_3 + ...))), where F_k are the Fermat numbers A000215. See A273580
infinite prime defined in A124262. See A126041
infinite product for n >= 1 of (1+1/n^2)^(n^2)/e. See A241991
infinite product of (1+1/n^2)^(n^2)/e for n >= 1. See A245018
infinite product of (1-1/n^2)^(n^2)/(1-1/(4*n^2))^(4*n^2) for n >= 2. See A247444
infinite product of (j/Pi)*sin(Pi/j), for j >= 2, a constant similar to the Kepler-Bouwkamp constant. See A245781
infinite product of e*(1-1/(4*n^2))^(4*n^2) for n >= 2. See A240985
infinite product of e*(1-1/n^2)^(n^2) for n >= 2, which evaluates as Pi/e^(3/2). See A240984
infinite product of zeta functions for even arguments. See A080729
infinite product of zeta functions for odd arguments >= 3. See A080730
infinite sum 1/log(2) + 1/(log(2)*log(3)) + 1/(log(2)*log(3)*log(4)) + ... See A217316
infinite sum Cos(i)/i! (where i ranges from 1 to Infinity). See A114941
infinite sum of cosines in second column of Schramm triangle. See A210617
infinite sum sin(i)/i! (where i ranges from 1 to Infinity). See A114940
infinite sum: each n-th prime number A000040(n) divided by each n-th Fibonacci number A000045(n), from n=1. See A098829
inflection point of the Einstein function E_1(x). See A118080
inflection point of x^(1/x). See A093157
inf{f(n,1)}, where f(1,x) = x + 1 and thereafter f(n,x) = f(n-1,x) + 1 if n is in A000201, else f(n,x) = 1/f(n-1,x). See A245215
inf{f(n,1)}, where f(1,x) = x + 1 and thereafter f(n,x) = x + 1 if n is in A001951, else f(n,x) = 1/x. See A245217
inf{f(n,1)}, where f(1,x) = x + 1 and thereafter f(n,x) = x + 1 if n is in A022838, else f(n,x) = 1/x. See A245220
inf{f(n,1)}, where f(1,x) = x + 1 and thereafter f(n,x) = x + 1 if n is in A054385, else f(n,x) = 1/x. See A245223
inradius of an icosidodecahedron with edge length 1. See A179453
inscribed sphere radius in a regular dodecahedron with unit edge. See A237603
integer (101101101101101101101101101)/9. See A113818
integer (640320^3 + 744)^2 * 70^2 = 337736875876935471466319632507953926400. See A160515
integer c^3 where c = 299792458 is the exact speed of light in vacuum (m/s). See A183000
integer c^4 where c = 299792458 (exactly) is the speed of light in vacuum (m/s). See A183001
integer Googol!. See A132826
Integers for which the decimal expansion of the reciprocal contains the repeating digits 1,4,2,8,5,7 (corresponding to the decimal expansion of 1/7) See A178335
integral ((arctan(1/x))^3,x=0..infinity). See A188141
integral from -1 to 1 of hyperfactorial(x). See A186904
integral from 0 to infinity of x/cosh(Pi*x) dx. See A214174
integral int_{x=0..1} 1/Gamma(x) dx. See A268911
integral of 1/binomial(2x,x) from x = 0 to infinity. See A225112
integral of cos((log x)/x)/x dx from x=0 to 1. See A117231
integral of cos(Pi*x)*log(x)/x from x=1 to infinity. See A175294
integral of cos(Pi*x)*log(x)/x^2 from x=1 to infinity. See A175295
Integral of Dedekind Eta(x*I) from x = 0 ... Infinity. See A186706
integral of log(2+x^2+y^2)/((1+x^2)*(1+y^2)) dx dy over the square [0,1]x[0,1]. See A244843
integral of log(x^2+y^2)/((1+x^2)*(1+y^2)) dx dy over the square [0,1]x[0,1] (negated). See A244858
integral of pi_q from 0 to 1. See A144875
integral of the logarithm of the Riemann zeta function from 1 to infinity. See A188157
integral of the logarithm of the Riemann zeta function from 2 to infinity. See A221710
integral of the q-Pochhammer symbol (reciprocal of the partition function) over the real interval -1 to 1. See A242168
integral over cos(pi*x)x^(1/x) between 1/e and e. See A177218
integral over dx/((1+x^2)(1+tan x)) in the limits 0 and Pi/2. See A233382
integral over exp(x)/sqrt(1-x^2) dx between 0 and 1. See A212186
integral over the first quadrant (x>0, y>0) of sqrt(x^2 + x*y + y^2)*exp(-x-y) dx dy. See A247684
integral over the square (0,1)x(0,1) of 1/((x+y)*sqrt((1-x)*(1-y))) dx dy. See A247685
integral over the square [-1,1]x[-1,1] of 1/sqrt(1+x^2+y^2) dx dy. See A247675
integral over the square [0,1]x[0,1] of (x^2 + y^2)^(3/2) dx dy. See A244922
integral over the square [0,1]x[0,1] of sqrt(1+(x-y)^2) dx dy. See A247674
integral over the square [0,Pi]x[0,Pi] of log(2-cos(x)-cos(y)) dx dy. See A247677
integral over x/(1+x^6*sinh^2 x) from x=0 to infinity. See A193182
Integral {x=0..infinity} 1/2^(2^x) dx. See A232734
Integral {x=1..2} gamma(x) dx. See A110543
integral(1/(n*log(n))^(3/2),n=2..Inf). See A103430
integral(t=0,1,1/t-Gamma(t))=0.2466939023078... See A159276
integral(t=0,1,zeta(t)+1/(1-t))=0.539298676... See A159275
integral_(0..1) K(1-x^2)^3 dx, where K is the complete elliptic integral of the first kind. See A240965
Integral_(x=1..c) (log(x)/(1+x))^2 dx, where c = A141251 = e^(LambertW(1/e)+1) corresponds to the maximum of the function. See A240242
Integral_(x=c..infinity) (log(x)/(1+x))^2 dx, where c = A141251 = e^(LambertW(1/e)+1) corresponds to the maximum of the function. See A240243
integral_0^infinity x^2/cosh(Pi*x) dx. See A020821
Integral_x=0..1 _y=0..x sin(x*y). See A257176
integral_{0, Pi/4} log(sin(x))^3 dx. See A217708
Integral_{0..1/2} log(gamma(x+1)) dx (negated). See A261830
integral_{0..1} Li_2(x)^2 dx, where Li_2 is the dilogarithm function. See A249651
integral_{0..1} Li_3(x) dx, where Li_3 is the trilogarithm function. See A249649
integral_{0..1} Li_3(x)^2 dx, where Li_3 is the trilogarithm function. See A249652
Integral_{0..1} log(1-x)*log(x)^2 dx (negated). See A262605
Integral_{0..1} log(1-x)^2*log(x)^2 dx (negated). See A262606
integral_{0..1} log(floor(1/x))/(1+x) dx. See A247038
integral_{0..1} t^2*arctan(t) dt. See A247686
integral_{0..infinity} 1/Gamma(1+x) dx, a variation of the Fransén-Robinson constant. See A247377
integral_{0..infinity} exp(-x)*(log(x))^2 dx. See A081855
Integral_{0..infinity} exp(-x)/(1-x*exp(-x)). See A258086
Integral_{0..infinity} exp(-x^2)*cosh(sqrt(1+x^2)) dx. See A256273
integral_{0..infinity} exp(-x^2)*log(x) dx. See A247017
Integral_{0..infinity} log(x)/cosh(x) dx (negated). See A257406
integral_{0..infinity} x*exp(-x)/(1+x^2) dx. See A246820
integral_{0..infinity} x*log(x)*(1-eta(x)^2) dx, where the function 'eta' is a solution of the Painlevé III differential equation. See A246687
Integral_{0..infinity} x*log(x)/(exp(2*Pi* x)-1) dx (negated). See A261829
Integral_{0..inf} x log(x)/(exp(x)-1) dx (negated). See A273240
Integral_{0..Pi/2} dtheta/(cos(theta)^3 + sin(theta)^3)^(2/3). See A290570
integral_{0..Pi/2} exp(t)*cos(t) dt. See A247718
integral_{0..Pi/2} sqrt(tan(t)) dt. See A247719
Integral_{0..Pi/2} x^2*log(cos(x))^2 dx, one of the log-cosine integrals related to zeta(3). See A256568
Integral_{0..Pi/2} x^2*tan(x)*log(sin(x)) dx (negated). See A261710
integral_{0..Pi} log(x)/x*log(1 + x)^2 dx, the second of two definite integrals studied by Rutledge and Douglas. See A247320
integral_{0..Pi} x*log(2*cos(x/2))^2 dx, the first of two definite integrals studied by Rutledge and Douglas, and using the constant A_4 (A214508). See A247319
Integral_{t=0..1} F(t)^F(t) dt, where F(t) is the Cantor function. See A113223
Integral_{t>=2} 1/(t*log(t)(t^2-1)) dt. See A096623
Integral_{x = 0 to oo} Product_{m=1..oo} cos(x/m) dx. See A190573
Integral_{x=0..1} arcsin(x)^2/x dx. See A225113
integral_{x=0..1} arctan(arctanh(x))/x. See A257963
Integral_{x=0..1} log(gamma(x))^2 dx. See A102887
Integral_{x=0..1} Product_{k>=1} (1-x^(2*k)) dx. See A258408
Integral_{x=0..1} Product_{k>=1} (1-x^(24*k)) dx. See A258414
Integral_{x=0..1} Product_{k>=1} (1-x^k) dx. See A258232
Integral_{x=0..1} Product_{k>=1} (1-x^k)^2 dx. See A258406
Integral_{x=0..1} Product_{k>=1} (1-x^k)^3 dx. See A258407
Integral_{x=0..1} Product_{k>=1} (1-x^k)^4 dx. See A258404
Integral_{x=0..1} Product_{k>=1} (1-x^k)^5 dx. See A258405
Integral_{x=0..1} Product_{k>=1} (1-x^k)^k dx. See A258412
Integral_{x=0..1} sin(log(x))/((x+1)*log(x)) dx. See A265011
Integral_{x=0..1} x*exp(x^3) dx. See A256670
integral_{x=0..1} x^(x^2) dx. See A253299
integral_{x=0..1} x^sqrt(x) dx. See A253300
integral_{x=0..infinity} 1/(cos(x) + x^2) dx. See A217732
integral_{x=0..Infinity} 1/x^x dx. See A229191
Integral_{x=0..Infinity} exp(-x)/(1+x^2) dx. See A224518
Integral_{x=0..Infinity} sin(x)/(x^2+1) dx. See A216184
Integral_{x=0..infinity} x!/x^x dx. See A240241
Integral_{x=0..infinity} x/(x^x) dx. See A098687
integral_{x=0..Pi/2} (x^2/sin(x)). See A245073
Integral_{x=0..Pi/2} sin(x)^(3/2) dx. See A225119
Integral_{x=0..Pi/2} sqrt(2-sin(x)^2) dx, an elliptic integral once studied by John Landen. See A256667
Integral_{x=0..Pi/2} x^3*cosec(x) dx. See A225125
Integral_{x=0..Pi} sin(x)/x. See A036792
integral_{x=1..infinity} 1/x^x dx. See A245637
Integral_{x=1..Infinity} dx/x^(x^x). See A215617
Integral_{x>=0} exp(-2x^2)Erf(x)^2 dx. See A103988
Integral_{x>=0} exp(-x^2)Erf(x)^3/x dx. See A103989
Integrate[(1 - x)/((1 + x y) (Log[x y])^2),{y,0,1},{x,0,1}]. See A103130
Integrate[Erf[x]^3/(E^(2*x^2)*x),{x,0,Infinity}]. See A115290
inverse binary entropy function of 1/2. See A102268
inverse of the number whose Engel expansion has the sequence of double factorial numbers (A000165) as coefficients. See A137989
inverse of the number whose Engel expansion has the sequence of factorial numbers (A000142) as coefficients. See A137987
inverse of the number whose Engel expansion has the sequence of Fibonacci numbers (A000045) as coefficients. See A137991
Inverted decimal expansion of Pi. See A066795
Ising constant K_c, the ratio of the coupling constant to the ferromagnetic critical temperature, in the two-dimensional case. See A245592
i^(-i), where i = sqrt(-1). See A042972
i^i = exp(-Pi/2). See A049006
J'_1(1), the first root of the derivative of the Bessel function J_1. See A259616
J'_2(1), the first root of the derivative of the Bessel function J_2. See A259617
J'_3(1), the first root of the derivative of the Bessel function J_3. See A259618
J'_4(1), the first root of the derivative of the Bessel function J_4. See A259619
J'_5(1), the first root of the derivative of the Bessel function J_5. See A259620
Jevon's number. See A273774
Josephson frequency ratio. See A248508
J_4 = Integral_{0..Pi/2} x^4/sin(x) dx. See A261068
J_5 = Integral_{0..Pi/2} x^5/sin(x) dx. See A261069
K = exp(8*G/(3*Pi)), a Kneser-Mahler constant related to an asymptotic inequality involving Bombieri's supremum norm, where G is Catalan's constant. K can be evaluated as Mahler's generalized height measure of the bivariate polynomial (1+x+x^2+y)^2. See A244238
k = log(262537412640768744)/Pi. See A210965
k such that e^(k*sqrt(163)) = round(e^(Pi*sqrt(163))). See A212131
k such that e^(Pi*k) = round(e^(Pi*sqrt(163))). See A210965
K(1/4), where K is the complete elliptic integral of the first kind. See A249282
K(3), a constant related to the Josephus problem. See A083286
K(3-2*sqrt(2)), where K is the complete elliptic integral of the first kind. See A276627
K(3/4), where K is the complete elliptic integral of the first kind. See A249283
k2, a Diophantine approximation constant such that the area of the "critical parallelogram" (in this case a square) is 4*k2. See A242671
K210. See A078110
k3, a Diophantine approximation constant such that the conjectured volume of the "critical parallelepiped" is 2^3*k3 (the 3-D analog of A242671). See A245278
Kakeya constant. See A263157
Kepler-Bouwkamp or polygon-inscribing constant. See A085365
Khinchin mean K_{-10}. See A087500
Khinchin mean K_{-1}. See A087491
Khinchin mean K_{-2}. See A087492
Khinchin mean K_{-3}. See A087493
Khinchin mean K_{-4}. See A087494
Khinchin mean K_{-5}. See A087495
Khinchin mean K_{-6}. See A087496
Khinchin mean K_{-7}. See A087497
Khinchin mean K_{-8}. See A087498
Khinchin mean K_{-9}. See A087499
Khintchine's constant. See A002210
Klarner-Rivest polyomino constant. See A276994
Kolakoski constant. See A118270
Komornik-Loreti constant. See A055060
Kuijlaars-Saff constant, a constant related to Tammes' constants, Thomson's electron problem and Fekete points. See A242617
k_3 = 3/(2*Pi*m_3), a constant associated with the asymptotic expansion of the probability that a three-dimensional random walk reaches a given point for the first time, where m_3 is A086231 (Watson's integral). See A245672

### Start of section L

L = integral_{0..1} 1/(1-2t^2/3) dt, an auxiliary constant associated with one of the integral inequalities studied by David Boyd. See A248914
L(3, chi3), where L(s, chi3) is the Dirichlet L-function for the non-principal character modulo 3. See A129404
L(3, chi4), where L(s, chi4) is the Dirichlet L-function for the non-principal character modulo 4. See A153071
L(e), the limit of iterations of continued fraction transforms of e. See A229597
L(Pi), the limit of iterations of continued fraction transforms of Pi. See A228993
Lamb's integral K_0. See A254133
Lamb's integral K_1. See A254134
Lamb's integral K_2. See A254135
lambda(1), a constant associated with the asymptotic upper tail of the distribution of the first hitting time T_{1,0} for an Ornstein-Uhlenbeck process across the level 1, starting at 0. See A249451
lambda(2) in Li's criterion. See A104539
lambda(2), a constant associated with the asymptotic upper tail of the distribution of the first hitting time T_{2,0} for an Ornstein-Uhlenbeck process across the level 2, starting at 0. See A247226
lambda(3) in Li's criterion. See A104540
lambda(4) in Li's criterion. See A104541
lambda(5) in Li's criterion. See A104542
lambda_3, an analog of the Stolarsky-Harborth constant for the number of elements not divisible by 3 in Pascal's triangle. See A247274
LambertW(1): the solution to x*exp(x) = 1. See A030178
Lampard's constant, decimal expansion of log(2)/(4*Pi^2). See A259679
Landau's constant L. See A081760
Landau-Kolmogorov constant C(3,1) for derivatives in the case L_infinity(-infinity, infinity). See A245198
Landau-Kolmogorov constant C(3,1) for derivatives in the case L_infinity(0, infinity). See A245201
Landau-Kolmogorov constant C(4,1) for derivatives in L_2(0, infinity). See A245286
Landau-Kolmogorov constant C(4,1) for derivatives in the case L_infinity(infinity, infinity). See A245293
Landau-Kolmogorov constant C(4,2) for derivatives in L_2(0, infinity). See A245287
Landau-Kolmogorov constant C(4,2) for derivatives in the case L_infinity(infinity, infinity). See A245294
Landau-Kolmogorov constant C(4,3) for derivatives in the case L_infinity(infinity, infinity). See A245295
Landau-Kolmogorov constant C(5,1) for derivatives in L_2(0, infinity). See A247373
Landau-Kolmogorov constant C(5,1) for derivatives in the case L_infinity(infinity, infinity). See A245296
Landau-Kolmogorov constant C(5,2) for derivatives in the case L_infinity(infinity, infinity). See A245297
Landau-Kolmogorov constant C(5,3) for derivatives in the case L_infinity(infinity, infinity). See A245298
Landau-Kolmogorov constant C(5,4) for derivatives in the case L_infinity(-infinity, infinity). See A245299
Landau-Ramanujan constant. See A064533
Laplace's limit constant. See A033259
larger of the two real fixed points of the sinhc function. See A133917
larger root of x^sqrt(x+1) = sqrt(x+1)^x See A182196
larger solution to x^x = 3/4. See A194625
largest "base 10" Stoneham number. See A085138
largest angular separation (in radians) between 13 points on a unit sphere. See A217695
largest arbitrarily-long Type-2 Trott-like constant (see A178160 for definition). See A178164
largest constant 'beta' for which there exists a solution to the differential equation y(x)+exp(y(x))=0, with y(0)=y(beta)=0. See A249136
largest C_0 = 1.2209864... such that for C < C_0 and A < 2 the sequence a(n) = floor[A^(C^n)] can't contain only prime terms. See A117739
largest negative solution to sin(x) + cos(x) + tan(x) = 0 (negated). See A259259
largest real root of e^x = Gamma(x+1). See A078335
largest real root of the quintic equation x^5 + 2*x^4 - 2*x^3 - x^2 + 2*x -1 = 0. See A103616
largest Stoneham number S(3,2). See A085117
largest x such that x^2 = Gamma(x+1). See A218802
largest x such that x^3 = Gamma(x+1). See A264785
largest zero of Riemann's prime counting function R(x). See A143531
least constant a0 such that, for all a >= a0, log(a + x) is submultiplicative on [1, +infty). See A258042
least number x satisfying 2*x^2=e^(-x). See A201936
least number x>0 satisfying -1=(x^2)*cos(x). See A196773
least positive number x satisfying e^(-x)=2*cos(x). See A196402
least positive number x satisfying e^(-x)=2*sin(x). See A196407
least positive number x satisfying e^(-x)=3*cos(x). See A196403
least positive number x satisfying e^(-x)=3*sin(x). See A196408
least positive number x satisfying e^(-x)=4*cos(x). See A196404
least positive number x satisfying e^(-x)=4*sin(x). See A196409
least positive number x satisfying e^(-x)=5*cos(x). See A196405
least positive number x satisfying e^(-x)=5*sin(x). See A196462
least positive number x satisfying e^(-x)=6*cos(x). See A196406
least positive number x satisfying e^(-x)=6*sin(x). See A196463
least positive number x satisfying e^(-x)=cos(x). See A196401
least positive solution of e*sin(x) = 1. See A105735
least positive x satisfying cos(x)=1/sqrt(1+x^2). See A196502
least positive x satisfying x+cot(x)=1/x. See A196501
least real z > 1 that satisfies: 1/2 = Sum_{n>=1} {z^n} / 2^n, where {x} denotes the fractional part of x. See A265222
least x > 0 having cos(4x) = (cos 3x)^2. See A019679
least x > 0 having cos(6x) = (cos 4x)^2. See A197488
least x > 0 satisfying 4=x*sin(x). See A196762
least x having 2*x^2+2x=3*cos(x). See A198126
least x having 2*x^2+2x=cos(x). See A198124
least x having 2*x^2+3x=2*cos(x). See A198130
least x having 2*x^2+3x=3*cos(x). See A198132
least x having 2*x^2+3x=4*cos(x). See A198134
least x having 2*x^2+3x=cos(x). See A198128
least x having 2*x^2+x=2*cos(x). See A198114
least x having 2*x^2+x=3*cos(x). See A198116
least x having 2*x^2+x=4*cos(x). See A198118
least x having 2*x^2+x=cos(x). See A198112
least x having 2*x^2-3x=-cos(x). See A198120
least x having 2*x^2-4x=-3*cos(x). See A198136
least x having 2*x^2-4x=-cos(x). See A198122
least x having 3*x^2+2x=2*cos(x). See A198224
least x having 3*x^2+2x=3*cos(x). Decimal expansion of greatest x having 3*x^2+2x=3*cos(x). See A198227
least x having 3*x^2+2x=3*cos(x). See A198226
least x having 3*x^2+2x=4*cos(x). See A198228
least x having 3*x^2+2x=cos(x). See A198222
least x having 3*x^2+3x=2*cos(x). See A198232
least x having 3*x^2+3x=4*cos(x). See A198234
least x having 3*x^2+3x=cos(x). See A198230
least x having 3*x^2+4x=2*cos(x). See A198238
least x having 3*x^2+4x=3*cos(x). See A198240
least x having 3*x^2+4x=4*cos(x). See A198138
least x having 3*x^2+4x=cos(x). See A198236
least x having 3*x^2+x=2*cos(x). See A198216
least x having 3*x^2+x=3*cos(x). See A198218
least x having 3*x^2+x=4*cos(x). See A198220
least x having 3*x^2+x=cos(x). See A198214
least x having 3*x^2-4x=-cos(x). See A198345
least x having 4*x^2+2x=3*cos(x). See A198359
least x having 4*x^2+2x=cos(x). See A198357
least x having 4*x^2+3x=2*cos(x). See A198363
least x having 4*x^2+3x=3*cos(x). See A198365
least x having 4*x^2+3x=4*cos(x). See A198367
least x having 4*x^2+3x=cos(x). See A198361
least x having 4*x^2+4x=3*cos(x). See A198371
least x having 4*x^2+4x=cos(x). See A198369
least x having 4*x^2+x=2*cos(x). See A198351
least x having 4*x^2+x=3*cos(x). See A198353
least x having 4*x^2+x=4*cos(x). See A198355
least x having 4*x^2+x=cos(x). See A198349
least x having 4*x^2-4x=cos(x). See A198373
least x having x^2+2x=2*cos(x). See A197843
least x having x^2+2x=3*cos(x). See A197845
least x having x^2+2x=4*cos(x). See A197847
least x having x^2+2x=cos(x). See A197841
least x having x^2+3x=2*cos(x). See A198104
least x having x^2+3x=3*cos(x). See A198106
least x having x^2+3x=4*cos(x). See A198108
least x having x^2+3x=cos(x). See A198102
least x having x^2-2x=-2*cos(x). See A197849
least x having x^2-2x=-3*cos(x). Decimal expansion of greatest x having x^2-2x=-3*cos(x). See A198140
least x having x^2-2x=-cos(x). See A197815
least x having x^2-3x=-2*cos(x). See A198098
least x having x^2-3x=-3*cos(x). See A198142
least x having x^2-3x=-cos(x). See A197825
least x having x^2-4x=-2*cos(x). See A198100
least x having x^2-4x=-3*cos(x). See A198144
least x having x^2-4x=-cos(x). See A197839
least x satisfying -x^2+2=e^x. See A201751
least x satisfying -x^2+3=e^x. See A201753
least x satisfying -x^2+4=e^x. See A201755
least x satisfying -x^2+5=e^x. See A201757
least x satisfying -x^2+6=e^x. See A201759
least x satisfying -x^2+7=e^x. See A201761
least x satisfying -x^2+8=e^x. See A201763
least x satisfying 10*x^2-1=csc(x) and 0<x<pi. See A201680
least x satisfying 10*x^2-1=sec(x) and 0<x<pi. See A201529
least x satisfying 10*x^2=csc(x) and 0<x<pi. See A201660
least x satisfying 10*x^2=sec(x) and 0<x<pi. See A201422
least x satisfying 10-x^2=e^x. See A201767
least x satisfying 2*x^2-1=csc(x) and 0<x<pi. See A201664
least x satisfying 2*x^2-2*cos(x)=3*sin(x). See A200118
least x satisfying 2*x^2-2*cos(x)=sin(x). See A200116
least x satisfying 2*x^2-3*cos(x)=2*sin(x). See A200122
least x satisfying 2*x^2-3*cos(x)=3*sin(x). See A200124
least x satisfying 2*x^2-3*cos(x)=4*sin(x). See A200126
least x satisfying 2*x^2-3*cos(x)=sin(x). See A200120
least x satisfying 2*x^2-4*cos(x)=3*sin(x). See A200130
least x satisfying 2*x^2-4*cos(x)=sin(x). See A200128
least x satisfying 2*x^2-cos(x)=2*sin(x). See A200109
least x satisfying 2*x^2-cos(x)=3*sin(x). See A200111
least x satisfying 2*x^2-cos(x)=4*sin(x). See A200114
least x satisfying 2*x^2-cos(x)=sin(x). See A200107
least x satisfying 2*x^2=csc(x) and 0<x<pi. See A201583
least x satisfying 2*x^2=sec(x) and 0<x<pi. See A201406
least x satisfying 3*x^2+cos(x)=4*sin(x). See A200006
least x satisfying 3*x^2-1=csc(x) and 0<x<pi. See A201666
least x satisfying 3*x^2-1=sec(x) and 0<x<pi. See A201515
least x satisfying 3*x^2-2*cos(x)=2*sin(x). See A200231
least x satisfying 3*x^2-2*cos(x)=3*sin(x). See A200233
least x satisfying 3*x^2-2*cos(x)=4*sin(x). See A200235
least x satisfying 3*x^2-2*cos(x)=sin(x). See A200229
least x satisfying 3*x^2-3*cos(x)=2*sin(x). See A200239
least x satisfying 3*x^2-3*cos(x)=4*sin(x). See A200241
least x satisfying 3*x^2-3*cos(x)=sin(x). See A200237
least x satisfying 3*x^2-3*cos(x)=sin(x). See A200277
least x satisfying 3*x^2-4*cos(x)=2*sin(x). See A200279
least x satisfying 3*x^2-4*cos(x)=3*sin(x). See A200281
least x satisfying 3*x^2-4*cos(x)=4*sin(x). See A200283
least x satisfying 3*x^2-cos(x)=2*sin(x). See A200223
least x satisfying 3*x^2-cos(x)=3*sin(x). See A200225
least x satisfying 3*x^2-cos(x)=4*sin(x). See A200227
least x satisfying 3*x^2-cos(x)=sin(x). See A200132
least x satisfying 3*x^2=csc(x) and 0<x<pi. See A201585
least x satisfying 3*x^2=sec(x) and 0<x<pi. See A201408
least x satisfying 3x=e^x. See A202351
least x satisfying 4*x^2+cos(x)=4*sin(x). See A200008
least x satisfying 4*x^2-1=csc(x) and 0<x<pi. See A201668
least x satisfying 4*x^2-1=sec(x) and 0<x<pi. See A201517
least x satisfying 4*x^2-2*cos(x)=3*sin(x). See A200295
least x satisfying 4*x^2-2*cos(x)=sin(x). See A200293
least x satisfying 4*x^2-3*cos(x)=2*sin(x). See A200297
least x satisfying 4*x^2-3*cos(x)=3*sin(x). See A200301
least x satisfying 4*x^2-3*cos(x)=4*sin(x). See A200303
least x satisfying 4*x^2-3*cos(x)=sin(x). See A200299
least x satisfying 4*x^2-4*cos(x)=3*sin(x). See A200307
least x satisfying 4*x^2-4*cos(x)=sin(x). See A200305
least x satisfying 4*x^2-cos(x)=2*sin(x). See A200287
least x satisfying 4*x^2-cos(x)=3*sin(x). See A200289
least x satisfying 4*x^2-cos(x)=4*sin(x). See A200291
least x satisfying 4*x^2-cos(x)=sin(x). See A200285
least x satisfying 4*x^2-cos(x)=sin(x). See A200286
least x satisfying 4*x^2=csc(x) and 0<x<pi. See A201587
least x satisfying 4*x^2=sec(x) and 0<x<pi. See A201410
least x satisfying 5*x^2-1=csc(x) and 0<x<pi. See A201670
least x satisfying 5*x^2-1=sec(x) and 0<x<pi. See A201519
least x satisfying 5*x^2=csc(x) and 0<x<pi. See A201589
least x satisfying 5*x^2=sec(x) and 0<x<pi. See A201412
least x satisfying 6*x^2-1=csc(x) and 0<x<Pi. See A201672
least x satisfying 6*x^2-1=sec(x) and 0<x<pi. See A201521
least x satisfying 6*x^2=csc(x) and 0<x<pi. See A201591
least x satisfying 6*x^2=sec(x) and 0<x<pi. See A201414
least x satisfying 7*x^2-1=csc(x) and 0<x<pi. See A201674
least x satisfying 7*x^2-1=sec(x) and 0<x<pi. See A201523
least x satisfying 7*x^2=csc(x) and 0<x<pi. See A201654
least x satisfying 7*x^2=sec(x) and 0<x<pi. See A201416
least x satisfying 8*x^2-1=csc(x) and 0<x<pi. See A201676
least x satisfying 8*x^2-1=sec(x) and 0<x<pi. See A201525
least x satisfying 8*x^2=csc(x) and 0<x<pi. See A201656
least x satisfying 8*x^2=sec(x) and 0<x<pi. See A201418
least x satisfying 9*x^2-1=csc(x) and 0<x<pi. See A201678
least x satisfying 9*x^2-1=sec(x) and 0<x<pi. See A201527
least x satisfying 9*x^2=csc(x) and 0<x<pi. See A201658
least x satisfying 9*x^2=sec(x) and 0<x<pi. See A201420
least x satisfying 9-x^2=e^x. See A201765
least x satisfying x+3*cos(x)=0. See A199603
least x satisfying x+4*cos(x)=0. See A199611
least x satisfying x^2+10=csc(x) and 0<x<pi. See A201578
least x satisfying x^2+2*cos(x)=3*sin(x). See A199955
least x satisfying x^2+2*cos(x)=4*sin(x). See A199957
least x satisfying x^2+2=csc(x) and 0<x<Pi. See A201564
least x satisfying x^2+3*cos(x)=3*sin(x). See A199959
least x satisfying x^2+3*cos(x)=4*sin(x). See A199961
least x satisfying x^2+3*sin(x)=-1. See A199052
least x satisfying x^2+3*x*cos(x)=1. See A199182
least x satisfying x^2+3*x*cos(x)=2*sin(x). See A199607
least x satisfying x^2+3*x*cos(x)=2. See A199184
least x satisfying x^2+3*x*cos(x)=sin(x). See A199605
least x satisfying x^2+3=csc(x) and 0<x<pi. See A201566
least x satisfying x^2+3x+1=e^x. See A201895
least x satisfying x^2+3x+1=e^x. See A201897
least x satisfying x^2+4*cos(x)=3*sin(x). See A199963
least x satisfying x^2+4*cos(x)=4*sin(x). See A199965
least x satisfying x^2+4*x*cos(x)=2*sin(x). See A199615
least x satisfying x^2+4*x*cos(x)=3*sin(x). See A199617
least x satisfying x^2+4*x*cos(x)=sin(x). See A199613
least x satisfying x^2+4=csc(x) and 0<x<pi. See A201568
least x satisfying x^2+4x+1=e^x. See A201903
least x satisfying x^2+4x+2=e^x. See A201905
least x satisfying x^2+4x+3=e^x. See A201924
least x satisfying x^2+4x+4=e^x. See A201927
least x satisfying x^2+5=csc(x) and 0<x<pi. See A201570
least x satisfying x^2+5x+1=e^x. See A201931
least x satisfying x^2+5x+2=e^x. See A201933
least x satisfying x^2+6=csc(x) and 0<x<pi. See A201572
least x satisfying x^2+7=csc(x) and 0<x<pi. See A201574
least x satisfying x^2+8=csc(x) and 0<x<pi. See A201576
least x satisfying x^2+9=csc(x) and 0<x<pi. See A201579
least x satisfying x^2+cos(x)=2*sin(x). See A199949
least x satisfying x^2+cos(x)=3*sin(x). See A199951
least x satisfying x^2+cos(x)=3*sin(x). See A199967
least x satisfying x^2+cos(x)=4*sin(x). See A199953
least x satisfying x^2+cos(x)=4*sin(x). See A200004
least x satisfying x^2-1=csc(x) and 0<x<pi. See A201661
least x satisfying x^2-2*cos(x)=2*sin(x). See A200020
least x satisfying x^2-2*cos(x)=3*sin(x). See A200022
least x satisfying x^2-2*cos(x)=4*sin(x). See A200024
least x satisfying x^2-2*cos(x)=sin(x). See A200018
least x satisfying x^2-2=csc(x) and 0<x<pi. See A201682
least x satisfying x^2-3*cos(x)=2*sin(x). See A200093
least x satisfying x^2-3*cos(x)=3*sin(x). See A200095
least x satisfying x^2-3*cos(x)=4*sin(x). See A200097
least x satisfying x^2-3*cos(x)=sin(x). See A200026
least x satisfying x^2-3=csc(x) and 0<x<pi. See A201735
least x satisfying x^2-4*cos(x)=2*sin(x). See A200101
least x satisfying x^2-4*cos(x)=3*sin(x). See A200103
least x satisfying x^2-4*cos(x)=4*sin(x). See A200105
least x satisfying x^2-4*cos(x)=sin(x). See A200099
least x satisfying x^2-4*x*cos(x)=2*sin(x). See A199735
least x satisfying x^2-4*x*cos(x)=3*sin(x). See A199733
least x satisfying x^2-4*x*cos(x)=4*sin(x). See A199731
least x satisfying x^2-4*x*cos(x)=sin(x). See A199737
least x satisfying x^2-4=csc(x) and 0<x<pi. See A201737
least x satisfying x^2-cos(x)=2*sin(x). See A200012
least x satisfying x^2-cos(x)=3*sin(x). See A200014
least x satisfying x^2-cos(x)=4*sin(x). See A200016
least x satisfying x^2-cos(x)=sin(x). See A200010
least x>0 having (cos(x))^2+(sin(2x))^2=1/2. See A197592
least x>0 having cos(2*Pi*x)=(cos 2x)^2. See A197519
least x>0 having cos(2*Pi*x)=(cos 3x)^2. See A197520
least x>0 having cos(2*Pi*x)=(cos x)^2. See A197518
least x>0 having cos(2*pi*x)=(cos x)^2. See A197585
least x>0 having cos(2x)=(cos 2*pi*x)^2. See A197509
least x>0 having cos(2x)=(cos 3*pi*x )^2. See A197507
least x>0 having cos(2x)=(cos 3*pi*x/2)^2. See A197508
least x>0 having cos(2x)=(cos 3x)^2. See A197479
least x>0 having cos(2x)=(cos 4x)^2. See A197480
least x>0 having cos(2x)=(cos pi*x)^2. See A197510
least x>0 having cos(2x)=(cos pi*x/2)^2. See A197511
least x>0 having cos(2x)=(cos pi*x/3)^2. See A197512
least x>0 having cos(2x)=(cos pi*x/4)^2. See A197513
least x>0 having cos(2x)=(cos pi*x/6)^2. See A197514
least x>0 having cos(3*pi*x)=(cos x)^2. See A197586
least x>0 having cos(3x)=(cos 2x)^2. See A197482
least x>0 having cos(3x)=(cos 4x)^2. See A197483
least x>0 having cos(3x)=(cos(6x))^2. See A197481
least x>0 having cos(4*pi*x)=(cos x)^2. See A197587
least x>0 having cos(4x)=(cos(6x))^2. See A197485
least x>0 having cos(4x)=(cos(8x))^2. See A197486
least x>0 having cos(6x)=(cos 8x)^2. See A197489
least x>0 having cos(Pi*x)=(cos 2x)^2. See A197516
least x>0 having cos(pi*x)=(cos 2x)^2. See A197577
least x>0 having cos(pi*x)=(cos 3x)^2. See A197578
least x>0 having cos(Pi*x)=(cos x)^2. See A197515
least x>0 having cos(pi*x)=(cos x)^2. See A197576
least x>0 having cos(Pi*x)=(cos x/2)^2. See A197517
least x>0 having cos(pi*x/2)=(cos 2x)^2. See A197580
least x>0 having cos(Pi*x/2)=(cos Pi*x/3)^2. See A197521
least x>0 having cos(pi*x/2)=(cos x)^2. See A197579
least x>0 having cos(pi*x/2)=(cos x/2)^2. See A197581
least x>0 having cos(Pi*x/3)=(cos(2*x))^2. See A197583
least x>0 having cos(Pi*x/3)=(cos(x))^2. See A197582
least x>0 having cos(Pi*x/3)=(cos(x/3))^2. See A197584
least x>0 having cos(x)=(cos 2*pi*x)^2. See A197490
least x>0 having cos(x)=(cos 2*pi*x)^2. See A197572
least x>0 having cos(x)=(cos 2*pi*x/3)^2. See A197506
least x>0 having cos(x)=(cos 2x)^2. See A197476
least x>0 having cos(x)=(cos 3*pi*x)^2. See A197335
least x>0 having cos(x)=(cos 3*pi*x)^2. See A197571
least x>0 having cos(x)=(cos 3*pi*x/2)^2. See A197491
least x>0 having cos(x)=(cos 3*pi*x/2)^2. See A197573
least x>0 having cos(x)=(cos 3x)^2. See A197477
least x>0 having cos(x)=(cos 4*pi*x)^2. See A197334
least x>0 having cos(x)=(cos 4*pi*x)^2. See A197522
least x>0 having cos(x)=(cos 4x)^2. See A197478
least x>0 having cos(x)=(cos pi*x)^2. See A197492
least x>0 having cos(x)=(cos pi*x)^2. See A197574
least x>0 having cos(x)=(cos pi*x/2)^2. See A197493
least x>0 having cos(x)=(cos pi*x/2)^2. See A197575
least x>0 having cos(x)=(cos pi*x/4)^2. See A197495
least x>0 having cos(x)=(cos(Pi*x/3))^2. See A197494
least x>0 having sin x = (sin 7x)^2. See A197253
least x>0 having sin(2x)=(sin 4x)^2. See A197255
least x>0 having sin(2x)=(sin 5x)^2. See A197256
least x>0 having sin(2x)=(sin 6x)^2. See A197257
least x>0 having sin(2x)=(sin 7x)^2. See A197258
least x>0 having sin(2x)=(sin 8x)^2. See A197259
least x>0 having sin(2x)=(sin pi*x/3)^2. See A197329
least x>0 having sin(2x)=(sin pi*x/4)^2. See A197330
least x>0 having sin(2x)=(sin pi*x/6)^2. See A197331
least x>0 having sin(2x)=2*pi*sin(2*pi*x). See A197827
least x>0 having sin(2x)=3*pi*sin(3*pi*x). See A197833
least x>0 having sin(2x)=3*sin(6x). See A197739
least x>0 having sin(2x)=4*sin(8x). See A197758
least x>0 having sin(2x)=pi*sin(pi*x). See A197821
least x>0 having sin(3*x)=(sin(Pi*x/6))^2. See A197375
least x>0 having sin(3x) = (sin 8x)^2. See A197266
least x>0 having sin(3x)=(sin 2x)^2. See A197261
least x>0 having sin(3x)=(sin 4x)^2. See A197262
least x>0 having sin(3x)=(sin 5x)^2. See A197263
least x>0 having sin(3x)=(sin 6x)^2. See A197264
least x>0 having sin(3x)=(sin 7x)^2. See A197265
least x>0 having sin(3x)=(sin pi*x/3)^2. See A197332
least x>0 having sin(3x)=(sin pi*x/4)^2. See A197333
least x>0 having sin(3x)=(sin x)^2. See A197260
least x>0 having sin(4x) = (sin x)^2. See A197267
least x>0 having sin(4x)=(sin 3x)^2. See A197268
least x>0 having sin(4x)=(sin 5x)^2. See A197269
least x>0 having sin(4x)=(sin 6x)^2. See A197270
least x>0 having sin(4x)=(sin 7x)^2. See A197281
least x>0 having sin(4x)=(sin 8x)^2. See A197282
least x>0 having sin(5x)=(sin 2x)^2. See A197284
least x>0 having sin(5x)=(sin 3x)^2. See A197285
least x>0 having sin(5x)=(sin 4x)^2. See A197286
least x>0 having sin(5x)=(sin 6x)^2. See A197287
least x>0 having sin(5x)=(sin 7x)^2. See A197288
least x>0 having sin(5x)=(sin 8x)^2. See A197289
least x>0 having sin(5x)=(sin x)^2. See A197283
least x>0 having sin(6x)=(sin 3x)^2. See A197292
least x>0 having sin(6x)=(sin 4x)^2. See A197293
least x>0 having sin(6x)=(sin 5x)^2. See A197294
least x>0 having sin(6x)=(sin 7x)^2. See A197295
least x>0 having sin(6x)=(sin 8x)^2. See A197296
least x>0 having sin(6x)=(sin x)^2. See A197290
least x>0 having sin(6x)=(sin(2x))^2. See A197291
least x>0 having sin(pi*x/3)=(sin 2x)^2. See A197385
least x>0 having sin(pi*x/3)=(sin 2x/3)^2. See A197389
least x>0 having sin(pi*x/3)=(sin 3x)^2. See A197386
least x>0 having sin(pi*x/3)=(sin pi*x/4)^2. See A197379
least x>0 having sin(pi*x/3)=(sin pi*x/6)^2. See A197380
least x>0 having sin(pi*x/3)=(sin x)^2. See A197384
least x>0 having sin(pi*x/3)=(sin x/2)^2. See A197387
least x>0 having sin(pi*x/3)=(sin x/3)^2. See A197388
least x>0 having sin(pi*x/4)=(sin 2x)^2. See A197391
least x>0 having sin(pi*x/4)=(sin 2x/3)^2. See A197411
least x>0 having sin(pi*x/4)=(sin 3x)^2. See A197392
least x>0 having sin(pi*x/4)=(sin pi*x/6)^2. See A197382
least x>0 having sin(pi*x/4)=(sin x)^2. See A197390
least x>0 having sin(pi*x/4)=(sin x/2)^2. See A197393
least x>0 having sin(pi*x/4)=(sin x/3)^2. See A197394
least x>0 having sin(pi*x/4)=(sin x/4)^2. See A197412
least x>0 having sin(Pi*x/4)=(sin(Pi*x/3))^2. See A197381
least x>0 having sin(pi*x/6)=(sin 2x)^2. See A197414
least x>0 having sin(pi*x/6)=(sin 2x/3)^2. See A197418
least x>0 having sin(pi*x/6)=(sin 3x)^2. See A197415
least x>0 having sin(pi*x/6)=(sin pi*x/3)^2. See A197383
least x>0 having sin(pi*x/6)=(sin x)^2. See A197413
least x>0 having sin(pi*x/6)=(sin x/2)^2. See A197416
least x>0 having sin(pi*x/6)=(sin x/3)^2. See A197417
least x>0 having sin(x)=(sin 2x)^2. See A197133
least x>0 having sin(x)=(sin 3x)^2. See A197134
least x>0 having sin(x)=(sin 4x)^2. See A197135
least x>0 having sin(x)=(sin 5x)^2. See A197251
least x>0 having sin(x)=(sin 6x)^2. See A197252
least x>0 having sin(x)=(sin 8x)^2. See A197254
least x>0 having sin(x)=(sin pi*x/3)^2. See A197326
least x>0 having sin(x)=(sin pi*x/4)^2. See A197327
least x>0 having sin(x)=(sin pi*x/6)^2. See A197328
least x>0 having sin(x)=(sin x/2)^2. See A197376
least x>0 having sin(x)=(sin(2x/3))^2. See A197378
least x>0 having sin(x)=(sin(x/3))^2. See A197377
least x>0 satisfying (cos(x))^2+(sin(2*Pi*x))^2=1/2. See A197832
least x>0 satisfying (cos(x))^2+(sin(3*Pi*x))^2=1. See A197837
least x>0 satisfying (cos(x))^2+(sin(3*Pi*x))^2=1/2. See A197838
least x>0 satisfying (cos(x))^2+(sin(Pi*x))^2=1/2. See A197826
least x>0 satisfying 1-10*x^2=tan(x). See A200705
least x>0 satisfying 1-2*x^2=tan(x). See A200695
least x>0 satisfying 1-3*x^2=tan(x). See A200697
least x>0 satisfying 1-4*x^2=tan(x). See A200699
least x>0 satisfying 1-5*x^2=tan(x). See A200700
least x>0 satisfying 1-6*x^2=tan(x). See A200701
least x>0 satisfying 1-7*x^2=tan(x). See A200702
least x>0 satisfying 1-8*x^2=tan(x). See A200703
least x>0 satisfying 1-9*x^2=tan(x). See A200704
least x>0 satisfying 1-x^2=tan(x). See A200685
least x>0 satisfying 1/(1+x^2)=2*cos(x). See A196817
least x>0 satisfying 1/(1+x^2)=2*sin(x). See A196826
least x>0 satisfying 1/(1+x^2)=3*cos(x). See A196818
least x>0 satisfying 1/(1+x^2)=3*sin(x). See A196827
least x>0 satisfying 1/(1+x^2)=4*cos(x). See A196819
least x>0 satisfying 1/(1+x^2)=4*sin(x). See A196828
least x>0 satisfying 1/(1+x^2)=5*cos(x). See A196820
least x>0 satisfying 1/(1+x^2)=5*sin(x). See A196829
least x>0 satisfying 1/(1+x^2)=6*cos(x). See A196821
least x>0 satisfying 1/(1+x^2)=6*sin(x). See A196830
least x>0 satisfying 1/(1+x^2)=cos(x). See A196816
least x>0 satisfying 1/(1+x^2)=sin(x). See A196825
least x>0 satisfying 10*x^2=tan(x). See A200646
least x>0 satisfying 10-x^2=tan(x). See A200694
least x>0 satisfying 1=(x^2)sin(x). See A196617
least x>0 satisfying 1=2x*sin(x). See A196624
least x>0 satisfying 1=3x*sin(x). See A196754
least x>0 satisfying 1=4x*sin(x). See A196755
least x>0 satisfying 1=5x*sin(x). See A196756
least x>0 satisfying 1=6x*sin(x). See A196757
least x>0 satisfying 1=x*cos(2*x). See A196608
least x>0 satisfying 1=x*cos(3*x). See A196602
least x>0 satisfying 1=x*cos(4*x). See A196609
least x>0 satisfying 1=x*cos(5*x). See A196626
least x>0 satisfying 1=x*cos(x-pi/3). See A196621
least x>0 satisfying 1=x*cos(x-pi/4). See A196622
least x>0 satisfying 1=x*cos(x-pi/5). See A196623
least x>0 satisfying 1=x*sin(x-pi/2), or, equivalently, -1=x*cos(x). See A196767
least x>0 satisfying 1=x*sin(x-pi/3). See A196768
least x>0 satisfying 1=x*sin(x-pi/4). See A196769
least x>0 satisfying 1=x*sin(x-pi/5). See A196770
least x>0 satisfying 1=x*sin(x-pi/6). See A196771
least x>0 satisfying 2*sec(x)=x. See A196612
least x>0 satisfying 2*x^2+1=tan(x). See A200358
least x>0 satisfying 2*x^2+2*x+1=tan(x). See A200364
least x>0 satisfying 2*x^2+2*x+3=tan(x). See A200365
least x>0 satisfying 2*x^2+3*x+1=tan(x). See A200366
least x>0 satisfying 2*x^2+3*x+2=tan(x). See A200367
least x>0 satisfying 2*x^2+3*x+3=tan(x). See A200368
least x>0 satisfying 2*x^2+3*x+4=tan(x). See A200369
least x>0 satisfying 2*x^2+3=tan(x). See A200359
least x>0 satisfying 2*x^2+4x+1=tan(x). See A200382
least x>0 satisfying 2*x^2+4x+3=tan(x). See A200383
least x>0 satisfying 2*x^2+5=tan(x). See A200640
least x>0 satisfying 2*x^2+x+1=tan(x). See A200360
least x>0 satisfying 2*x^2+x+2=tan(x). See A200361
least x>0 satisfying 2*x^2+x+3=tan(x). See A200362
least x>0 satisfying 2*x^2+x+4=tan(x). See A200363
least x>0 satisfying 2*x^2-2*x+1=tan(x). See A200497
least x>0 satisfying 2*x^2-2*x+3=tan(x). See A200498
least x>0 satisfying 2*x^2-3*x+1=tan(x). See A200499
least x>0 satisfying 2*x^2-3*x+2=tan(x). See A200500
least x>0 satisfying 2*x^2-3*x+3=tan(x). See A200501
least x>0 satisfying 2*x^2-3*x+4=tan(x). See A200502
least x>0 satisfying 2*x^2-4*x+1=tan(x). See A200584
least x>0 satisfying 2*x^2-4*x+3=tan(x). See A200585
least x>0 satisfying 2*x^2-x+1=tan(x). See A200493
least x>0 satisfying 2*x^2-x+2=tan(x). See A200494
least x>0 satisfying 2*x^2-x+3=tan(x). See A200495
least x>0 satisfying 2*x^2-x+4=tan(x). See A200496
least x>0 satisfying 2-3*x^2=tan(x). See A200698
least x>0 satisfying 2-x^2=tan(x). See A200686
least x>0 satisfying 2=x*sin(x). See A196760
least x>0 satisfying 3*sec(x)=x. See A196613
least x>0 satisfying 3*x^2+1=tan(x). See A200384
least x>0 satisfying 3*x^2+2*x+1=tan(x). See A200391
least x>0 satisfying 3*x^2+2*x+2=tan(x). See A200392
least x>0 satisfying 3*x^2+2*x+3=tan(x). See A200393
least x>0 satisfying 3*x^2+2*x+4=tan(x). See A200394
least x>0 satisfying 3*x^2+2=tan(x). See A200385
least x>0 satisfying 3*x^2+3*x+1=tan(x). See A200395
least x>0 satisfying 3*x^2+3*x+2=tan(x). See A200396
least x>0 satisfying 3*x^2+3*x+4=tan(x). See A200397
least x>0 satisfying 3*x^2+4*x+1=tan(x). See A200398
least x>0 satisfying 3*x^2+4*x+2=tan(x). See A200399
least x>0 satisfying 3*x^2+4*x+3=tan(x). See A200400
least x>0 satisfying 3*x^2+4*x+4=tan(x). See A200401
least x>0 satisfying 3*x^2+4=tan(x). See A200386
least x>0 satisfying 3*x^2+5=tan(x). See A200641
least x>0 satisfying 3*x^2+x+1=tan(x). See A200387
least x>0 satisfying 3*x^2+x+2=tan(x). See A200388
least x>0 satisfying 3*x^2+x+3=tan(x). See A200389
least x>0 satisfying 3*x^2+x+4=tan(x). See A200390
least x>0 satisfying 3*x^2-2*x+1=tan(x). See A200589
least x>0 satisfying 3*x^2-2*x+2=tan(x). See A200590
least x>0 satisfying 3*x^2-2*x+3=tan(x). See A200591
least x>0 satisfying 3*x^2-2*x+4=tan(x). See A200592
least x>0 satisfying 3*x^2-3*x+1=tan(x). See A200593
least x>0 satisfying 3*x^2-3*x+2=tan(x). See A200594
least x>0 satisfying 3*x^2-3*x+4=tan(x). See A200595
least x>0 satisfying 3*x^2-4*x+1=tan(x). See A200596
least x>0 satisfying 3*x^2-4*x+2=tan(x). See A200597
least x>0 satisfying 3*x^2-4*x+3=tan(x). See A200598
least x>0 satisfying 3*x^2-4*x+4=tan(x). See A200599
least x>0 satisfying 3*x^2-x+2=tan(x). See A200586
least x>0 satisfying 3*x^2-x+3=tan(x). See A200587
least x>0 satisfying 3*x^2-x+4=tan(x). See A200588
least x>0 satisfying 3-2*x^2=tan(x). See A200696
least x>0 satisfying 3-x^2=tan(x). See A200687
least x>0 satisfying 3=x*sin(x). See A196761
least x>0 satisfying 4*sec(x)=x. See A196614
least x>0 satisfying 4*x^2+1=tan(x). See A200410
least x>0 satisfying 4*x^2+2*x+1=tan(x). See A200416
least x>0 satisfying 4*x^2+2*x+3=tan(x). See A200417
least x>0 satisfying 4*x^2+3*x+1=tan(x). See A200418
least x>0 satisfying 4*x^2+3*x+2=tan(x). See A200419
least x>0 satisfying 4*x^2+3*x+3=tan(x). See A200420
least x>0 satisfying 4*x^2+3*x+4=tan(x). See A200421
least x>0 satisfying 4*x^2+3=tan(x). See A200411
least x>0 satisfying 4*x^2+4*x+1=tan(x). See A200422
least x>0 satisfying 4*x^2+4*x+3=tan(x). See A200423
least x>0 satisfying 4*x^2+5=tan(x). See A200642
least x>0 satisfying 4*x^2+x+1=tan(x). See A200412
least x>0 satisfying 4*x^2+x+2=tan(x). See A200413
least x>0 satisfying 4*x^2+x+3=tan(x). See A200414
least x>0 satisfying 4*x^2+x+4=tan(x). See A200415
least x>0 satisfying 4*x^2-2*x+1=tan(x). See A200604
least x>0 satisfying 4*x^2-2*x+3=tan(x). See A200605
least x>0 satisfying 4*x^2-3*x+1=tan(x). See A200606
least x>0 satisfying 4*x^2-3*x+2=tan(x). See A200607
least x>0 satisfying 4*x^2-3*x+3=tan(x). See A200608
least x>0 satisfying 4*x^2-3*x+4=tan(x). See A200609
least x>0 satisfying 4*x^2-4*x+1=tan(x). See A200610
least x>0 satisfying 4*x^2-4*x+3=tan(x). See A200611
least x>0 satisfying 4*x^2-x+1=tan(x). See A200600
least x>0 satisfying 4*x^2-x+2=tan(x). See A200601
least x>0 satisfying 4*x^2-x+3=tan(x). See A200602
least x>0 satisfying 4*x^2-x+4=tan(x). See A200603
least x>0 satisfying 4-x^2=tan(x). See A200688
least x>0 satisfying 5*sec(x)=x. See A196615
least x>0 satisfying 5*x^2+1=tan(x). See A200628
least x>0 satisfying 5*x^2+2=tan(x). See A200629
least x>0 satisfying 5*x^2+3=tan(x). See A200630
least x>0 satisfying 5*x^2+4=tan(x). See A200631
least x>0 satisfying 5*x^2=tan(x). See A200618
least x>0 satisfying 5-x^2=tan(x). See A200689
least x>0 satisfying 5=x*sin(x). See A196763
least x>0 satisfying 6*sec(x)=x. See A196616
least x>0 satisfying 6*x^2+1=tan(x). See A200637
least x>0 satisfying 6*x^2+5=tan(x). See A200638
least x>0 satisfying 6*x^2=tan(x). See A200632
least x>0 satisfying 6-x^2=tan(x). See A200690
least x>0 satisfying 6=x*sin(x). See A196764
least x>0 satisfying 7*x^2=tan(x). See A200643
least x>0 satisfying 7-x^2=tan(x). See A200691
least x>0 satisfying 8*x^2=tan(x). See A200644
least x>0 satisfying 8-x^2=tan(x). See A200692
least x>0 satisfying 9*x^2=tan(x). See A200645
least x>0 satisfying 9-x^2=tan(x). See A200693
least x>0 satisfying f(x)=m/2, where m is the maximal value of f(x)=(cos(x))^2+(sin(2*Pi*x))^2. See A197829
least x>0 satisfying f(x)=m/2, where m is the maximal value of f(x)=(cos(x))^2+(sin(3*Pi*x))^2. See A197835
least x>0 satisfying f(x)=m/2, where m is the maximal value of f(x)=(cos(x))^2+(sin(3x))^2. See A197590
least x>0 satisfying f(x)=m/2, where m is the maximal value of f(x)=(cos(x))^2+(sin(4x))^2. See A197760
least x>0 satisfying f(x)=m/2, where m is the maximal value of f(x)=(cos(x))^2+(sin(Pi*x))^2. See A197823
least x>0 satisfying f(x)=m/2, where m is the maximal value of the function f(x)=cos(x)^2+sin(2x)^2. See A197589
least x>0 satisfying f(x)=m/3, where m is the maximal value of f(x)=(cos(x))^2+(sin(2*Pi*x))^2^2. See A197830
least x>0 satisfying f(x)=m/3, where m is the maximal value of f(x)=(cos(x))^2+(sin(3*Pi*x))^2^2. See A197836
least x>0 satisfying f(x)=m/3, where m is the maximal value of f(x)=(cos(x))^2+(sin(3x))^2. See A197755
least x>0 satisfying f(x)=m/3, where m is the maximal value of f(x)=(cos(x))^2+(sin(4x))^2. See A197761
least x>0 satisfying f(x)=m/3, where m is the maximal value of f(x)=(cos(x))^2+(sin(Pi*x))^2^2. See A197824
least x>0 satisfying f(x)=m/3, where m is the maximal value of f(x)=cos(x)^2+sin(2x)^2. See A197591
least x>0 satisfying sec(x)=2x. See A196603
least x>0 satisfying sec(x)=3x. See A196604
least x>0 satisfying sec(x)=4x. See A196605
least x>0 satisfying sec(x)=5x. See A196606
least x>0 satisfying sec(x)=6x. See A196607
least x>0 satisfying x+tan(x)=0. See A196504
least x>0 satisfying x^2+1=tan(x). See A200338
least x>0 satisfying x^2+2=tan(x). See A200339
least x>0 satisfying x^2+2x+1=tan(x). See A200346
least x>0 satisfying x^2+2x+2=tan(x). See A200347
least x>0 satisfying x^2+2x+3=tan(x). See A200348
least x>0 satisfying x^2+2x+4=tan(x). See A200349
least x>0 satisfying x^2+3*x*cos(x)=3*sin(x). See A199609
least x>0 satisfying x^2+3=tan(x). See A200340
least x>0 satisfying x^2+3x+1=tan(x). See A200350
least x>0 satisfying x^2+3x+2=tan(x). See A200351
least x>0 satisfying x^2+3x+3=tan(x). See A200352
least x>0 satisfying x^2+3x+4=tan(x). See A200353
least x>0 satisfying x^2+4*x*cos(x)=4*sin(x). See A199619
least x>0 satisfying x^2+4=tan(x). See A200341
least x>0 satisfying x^2+4x+1=tan(x). See A200354
least x>0 satisfying x^2+4x+2=tan(x). See A200355
least x>0 satisfying x^2+4x+3=tan(x). See A200356
least x>0 satisfying x^2+4x+4=tan(x). See A200357
least x>0 satisfying x^2+5=tan(x). See A200639
least x>0 satisfying x^2+x+1=tan(x). See A200342
least x>0 satisfying x^2+x+2=tan(x). See A200343
least x>0 satisfying x^2+x+3=tan(x). See A200344
least x>0 satisfying x^2+x+4=tan(x). See A200345
least x>0 satisfying x^2-2x+1=tan(x). See A200481
least x>0 satisfying x^2-2x+2=tan(x). See A200482
least x>0 satisfying x^2-2x+3=tan(x). See A200483
least x>0 satisfying x^2-2x+4=tan(x). See A200484
least x>0 satisfying x^2-3x+1=tan(x). See A200485
least x>0 satisfying x^2-3x+2=tan(x). See A200486
least x>0 satisfying x^2-3x+3=tan(x). See A200487
least x>0 satisfying x^2-3x+4=tan(x). See A200488
least x>0 satisfying x^2-4x+1=tan(x). See A200489
least x>0 satisfying x^2-4x+2=tan(x). See A200490
least x>0 satisfying x^2-4x+3=tan(x). See A200491
least x>0 satisfying x^2-4x+4=tan(x). See A200492
least x>0 satisfying x^2-x+1=tan(x). See A200477
least x>0 satisfying x^2-x+2=tan(x). See A200478
least x>0 satisfying x^2-x+3=tan(x). See A200479
least x>0 satisfying x^2-x+4=tan(x). See A200480
least x>0 that gives the absolute minimum of cos(x)+cos(2x)+cos(3x)+cos(4x)+cos(5x)+cos(6x). See A198676
least x>0 that gives the absolute minimum of cos(x)+cos(2x)+cos(3x)+cos(4x)+cos(5x). See A198674
least x>0 that gives the absolute minimum of cos(x)+cos(2x)+cos(3x)+cos(4x). See A198672
least x>0 that gives the absolute minimum of cos(x)+cos(2x)+cos(3x). See A198670
least x>0 that gives the absolute minimum of f(x)+f(2x)+f(3x)+f(4x)+f(5x)+f(6x), where f(x)=sin(x)+cos(x). See A198744
least x>0 that gives the absolute minimum of f(x)+f(2x)+f(3x)+f(4x)+f(5x)+f(6x), where f(x)=sin(x)-cos(x). See A198754
least x>0 that gives the absolute minimum of f(x)+f(2x)+f(3x)+f(4x)+f(5x), where f(x)=sin(x)+cos(x). See A198742
least x>0 that gives the absolute minimum of f(x)+f(2x)+f(3x)+f(4x)+f(5x), where f(x)=sin(x)-cos(x). See A198752
least x>0 that gives the absolute minimum of f(x)+f(2x)+f(3x)+f(4x), where f(x)=sin(x)+cos(x). See A198740
least x>0 that gives the absolute minimum of f(x)+f(2x)+f(3x)+f(4x), where f(x)=sin(x)-cos(x). See A198750
least x>0 that gives the absolute minimum of f(x)+f(2x)+f(3x), where f(x)=sin(x)-cos(x). See A198748
least x>0 that gives the absolute minimum of f(x)+f(2x), where f(x)=sin(x)+cos(x). See A198736
least x>0 that gives the absolute minimum of f(x)+f(2x), where f(x)=sin(x)-cos(x). See A198746
least x>0 that gives the absolute minimum of sin(x)+sin(2x)+sin(3x)+sin(4x)+sin(5x)+sin(6x). See A198734
least x>0 that gives the absolute minimum of sin(x)+sin(2x)+sin(3x)+sin(4x)+sin(5x). See A198732
least x>0 that gives the absolute minimum of sin(x)+sin(2x)+sin(3x)+sin(4x). See A198730
least x>0 that gives the absolute minimum of sin(x)+sin(2x)+sin(3x). See A198728
least x>0 that gives the absolute minimum of sin(x)+sin(2x). See A198678
least x>0 that gives the absolute minimum of the absolute minimum of f(x)+f(2x)+f(3x), where f(x)=sin(x)+cos(x). See A198738
left Alzer's constant x. See A254615
leftmost root of Im(W(z)/log(z)) = Re(W(z)/log(z)) (negated), where W(z) denotes the Lambert W function. See A271310
Legendre's constant (incorrect, the true value is 1, as in A000007). See A228211
Lehmer's constant (also known as the Salem constant). See A073011
Lehmer's constant. See A030125
lemniscate constant A. See A085565
lemniscate constant B. See A076390
Lemniscate constant or Gauss's constant. See A062539
length (in meters) of the seconds pendulum, a pendulum whose period is two seconds at standard gravity. See A226204
length of a parsec (meters), prior to its redefinition in August 2015. See A248424
length of a parsec in meters, as defined in 2015. See A292525
length of edge of a regular icosahedron with radius of circumscribed sphere = 1. See A179290
length of one Gaussian year in mean solar days. See A249281
length of one light year in meters See A213614
length of the "double egg" curve (length of one egg with diameter a = 1). See A259830
length of the dipole curve. See A222494
length of the mean tropical year on 1 January 2000 measured in days. See A155540
length of the quartic curve with implicit cartesian equation x^4 + y^2 = 1 (sometimes named "elliptic lemniscate"). See A227718
length ratio (largest diagonal)/side in the regular 11-gon (hendecagon). See A231186
length ratio (largest diagonal)/side in the regular 7-gon (or heptagon). See A231187
length/width of a 2nd electrum rectangle. See A188639
length/width of a meta-1st electrum rectangle. See A188638
length/width of a metasilver rectangle. See A188636
length/width ratio of a (1/2)-extension rectangle. See A188934
length/width ratio of a (1/3)-extension rectangle. See A188935
length/width ratio of a (10/3)-extension rectangle. See A188882
length/width ratio of a (2/e)-extension rectangle. See A188885
length/width ratio of a (2/pi)-extension rectangle. See A188883
length/width ratio of a (3/4)-extension rectangle. See A188657
length/width ratio of a (4/3)-extension rectangle. See A188655
length/width ratio of a (6/5)-extension rectangle. See A188736
length/width ratio of a (7/2)-extension rectangle. See A188734
length/width ratio of a (7/3)-extension rectangle. See A188737
length/width ratio of a (9/2)-extension rectangle. See A188735
length/width ratio of a sqrt(1/3)-extension rectangle. See A188926
length/width ratio of a sqrt(2)-extension rectangle. See A188887
length/width ratio of a sqrt(20)-extension rectangle. See A188930
length/width ratio of a sqrt(28)-extension rectangle. See A188932
length/width ratio of a sqrt(3)-extension rectangle. See A188922
length/width ratio of a sqrt(48)-extension rectangle. See A188928
length/width ratio of a sqrt(6)-extension rectangle. See A188924
Lengyel's constant L. See A086053
lesser of two values of x satisfying 2*x^2=tan(x) and 0<x<pi/2. See A200679
lesser of two values of x satisfying 3*x^2-1=tan(x) and 0<x<pi/2. See A200614
lesser of two values of x satisfying 3*x^2=tan(x) and 0<x<pi/2. See A200681
lesser of two values of x satisfying 4*x^2-1=tan(x) and 0<x<pi/2. See A200616
lesser of two values of x satisfying 4*x^2=tan(x) and 0<x<pi/2. See A200683
lesser of two values of x satisfying 5*x^2-1=tan(x) and 0<x<pi/2. See A200620
lesser of two values of x satisfying 5*x^2-2=tan(x) and 0<x<pi/2. See A200622
lesser of two values of x satisfying 5*x^2-3=tan(x) and 0<x<pi/2. See A200624
lesser of two values of x satisfying 5*x^2-4=tan(x) and 0<x<pi/2. See A200626
lesser of two values of x satisfying 6*x^2-1=tan(x) and 0<x<pi/2. See A200633
lesser of two values of x satisfying 6*x^2-5=tan(x) and 0<x<pi/2. See A200635
Let a equal the length of one side of an equilateral triangle and let b equal the radius of the circle inscribed in that triangle. This sequence gives the decimal expansion of b/a. See A020769
Let f(x) = Sum_{m>=1} mu(m)*x^(m-1); sequence gives decimal expansion of f(0.5). See A181481
Let rho(n) be the first positive root of Bessel function J_n(x). This sequence is decimal expansion of derivative rho'(0)=1.54288974... See A175838
Levy's constant 12*log(2)/Pi^2. See A089729
Levy-Cantor distribution area constant. See A157683
li(2) = gamma + log(log(2)) + Sum_{k>=1} log(2)^k / ( k*k! ). See A069284
lim n -> infinity (1/n)*exp(2*(b(n)^2-2n)) where b(1) = 1, b(i) = b(i-1) + 1/b(i-1) (see A073833). See A232975
lim n -> infinity A001699(n)^(1/2^n). See A077496
lim n -> infinity b(n)^2-2n-(log n)/2 where b(1) = 1, b(i) = b(i-1) + 1/b(i-1) (see A073833). See A233770
limit A006156(n)^(1/n) as n tends to infinity. See A273155
limit as n -> infinity of {1/2 ^ 1/3 ^ 1/5 ^ ... ^ 1/prime(2n)}. See A117493
limit as n -> infinity of {1/2 ^ 1/3 ^ 1/5 ^ ... ^ 1/prime(2n-1)}. See A117492
limit as n tends to infinity of n*s_n, where the s_n are the hexagonal circle-packing rigidity constants. See A255902
limit k --> +-infinity k^2*(1-Gamma(1+i/k)) where i^2=-1 and Gamma is the Gamma function. See A090998
limit n-->infty B(2n,5)/(B(2n)*25^n) ( see comment for B(n,k) definition ). See A096052
limit n-->infty B(2n,7)/(B(2n)*49^n) ( see comment for B(n,k) definition ). See A096050
limit n-->infty B(2n,8)/(B(2n)*64^n) ( see comment for B(n,k) definition ). See A096051
limit of a power tower: t(2)^(t(3)^(t(4)^(t(5)^(...)))) where t(n)=n!^(1/n!) and n takes on consecutive integer values >=2. See A100123
limit of a power tower: t(2)^(t(3)^(t(5)^(t(7)^(...)))) where t(n)=n^(1/n!) and takes takes on consecutive prime values. See A100122
limit of a recursive sequence connected to the Plastic constant (A060006). See A240982
limit of an infinite product involving the GAMMA function and the ZETA function. See A081709
limit of c(n)/c(n-1) where c = A227728. See A225815
limit of H(c(n)) - H(c(n-1)) where c = A227728, H = harmonic number. See A227729
limit of q(n)= A024916(n)/A002088(n) = SummatorySigma / SummatoryTotient . See A098198
limit of the (2/n^2)th power of the number of distinct dimer coverings on the n X n square grid, n even, as n goes to infinity. See A130834
limit of the continued fraction 1/(1+2/(2+2/(3+2/(4+... in terms of Bessel functions. See A222466
limit of the imaginary part of f(1+i,n), where f(x,0) = 1 and f(x,n) = x + 1/f(x,n-1). See A248750
limit of the imaginary part of f(1-i,n)/f(1-i,n+1), where f(x,n) is the n-th Fibonacci polynomial. See A248752
limit of the maximum real root of M(n,-x) as n -> infinity, where M(n,x) is the n-th Moebius polynomial and satisfies M(n,-1) = mu(n) the Moebius function of n. See A077601
limit of the n-fold application of the natural logarithm to A049384 as n tends to infinity. See A218583
limit of the n-th continued fraction convergent, A086399(n)/A073999(n), which has the least prime denominator. See A083700
limit of the nested cos(1+cos(2+cos(3+cos(4+...)))). See A276521
limit of the nested logarithm log(1+2*log(1+3*log(1+4*log(...)))). See A285814
limit of the nested radical sqrt(1 + sqrt(2 + sqrt(3 + sqrt(4 + ... )))). See A072449
limit of the nested sin(1+ sin(2+ sin(3+ sin(4+ ...)))). See A283749
limit of the nested tanh(1+tanh(2+tanh(3+tanh(4+...)))). See A276538
limit of the nested Zeta(1+Zeta(2+Zeta(3+Zeta(4+...)))). See A276539
limit of the probability that a random binary word is an instance of the Zimin pattern "abacaba" as word length approaches infinity. See A262313
limit of the real part of f(1+i,n), where f(x,0) = 1 and f(x,n) = x + 1/f(x,n-1). See A248749
limit of the real part of f(1-i,n)/f(1-i,n+1), where f(x,n) is the n-th Fibonacci polynomial. See A248751
limit of the square root of the ratio of consecutive Padovan numbers. See A191909
limit of [0;1,1,...] + [0;2,2,...] + ... + [0;n,n,...] - log(n) as n approaches infinity. See A205325
limit sqrt(1*sqrt(3*sqrt(5*sqrt(7*sqrt(9*...sqrt((2*n-1)...)))))) See A188835
limit sqrt(2*sqrt(3*sqrt(5*sqrt(7*sqrt(11*...sqrt(Prime(n)...))))) See A171759
limit sqrt(2*sqrt(4*sqrt(6*sqrt(8*sqrt(10*...sqrt(2*n...)))))) See A188834
limit sqrt(2’*sqrt(3’*sqrt(4’*sqrt(5’*sqrt(6’*...))))), where n’ is the arithmetic derivative of n. See A190142
limit to which tends the difference between the series for 1/A217626(x) and the Gamma function evaluated for M, where 2<M and 1<=x<M!. See A219995
limit when n -> infinity of the product prod_{k=1..2n+1} (1 - 2/(2*k+1))^(k*(-1)^k). See A241995
limit when n -> infinity of the product prod_{k=1..2n+1} e^(-1/4)*(1 - 1/(k+1))^((1/2)*k*(k+1)*(-1)^k). See A241992
limit when n -> infinity of the product prod_{k=1..2n} (1 - 2/(2*k+1))^(k*(-1)^k). See A241994
limit when n -> infinity of the product prod_{k=1..2n} e^(1/4)*(1 - 1/(k+1))^((1/2)*k*(k+1)*(-1)^k). See A241993
limit y-->infinity y^2*(Re(zeta(1+i/y))-Gamma). See A082632
limiting difference of n - Sum[Cos[Pi/2^k],{k,0,n}]. See A120703
limiting length appearing in the asymptotic probability involved in the "stick breaking" problem. See A243398
limiting Nusselt Number for laminar flow in a cylindrical pipe with constant wall temperature See A282581
limiting ratio described in Comments. See A274192
limiting ratio described in Comments. See A274195
limiting ratio described in Comments. See A274198
limiting ratio of Sum[Cos[Pi/2^k],{k,0,n}]/n. See A120704
limit_{n->inf} M(n,1)/2^n, where M(n,1) is the sum of the coefficients of the n-th Moebius polynomial (Cf. A074587). See A077602
lim_(n->infinity) ((sum_(k=1..n) 1/sqrt(k)) - integral_(x=1..n) 1/sqrt(x))), a generalized Euler constant which evaluates to zeta(1/2)+2. See A242616
lim_{k->oo} f(k), where f(1)=2, and f(k) = 2 + log(f(k-1)) for k>1. See A226572
lim_{k->oo} f(k), where f(1)=2, and f(k) = 2 - log(f(k-1)) for k>1. See A226571
lim_{k->oo} f(k), where f(1)=e, and f(k) = e + log(f(k-1)) for k>1. See A226574
lim_{k->oo} f(k), where f(1)=e, and f(k) = e - log(f(k-1)) for k>1. See A226573
lim_{n->infinity} ((1/log(n)^2)*Product_{2 < p < n, p prime} p/(p+2)). See A246061
lim_{N->infinity} (1/N^2 Sum_{n=1..N} K(n)), where K(n) is the squarefree kernel of n. See A272300
lim_{n->infinity} -FractionalPart[Zeta'(1+1/n)] or -FractionalPart[Zeta'(1-1/n))], where Zeta' is the first derivative of the Riemann Zeta function. See A252898
lim_{n->inf} (2 - sqrt(2)^^n)/log(2)^n, where x^^n denotes tetration. See A277435
lim_{n->oo} e^H(n)-n*e^gamma, where H(n) is the n-th harmonic number. See A217597
linear asymptotic constant B in Sum_{k=1..n} 1/A000688(k) = ~B*n + ... See A084911
Littlewood-Salem-Izumi constant. See A157957
Li_3(1/2). See A099217
Li_4(1/2). See A099218
Li_5(1/2). See A099219
Li_6(1/2). See A099220
Li_7(1/2). See A099221
Li_8(1/2). See A099222
Li_9(1/2). See A099223
Li_{10}(1/2). See A099224
local maximum of the Barnes G function in the interval [0,2]. See A245082
local minimum F(x) of the Fibonacci Function at x = A171909. See A172081
local minimum of tan(x) - csc(x). See A281289
local minimum of the Barnes G function in the interval [2,4]. See A245084
local minimum of the hyperfactorial function. See A186905
location of a maximum of a Fibonacci Hamiltonian function. See A128426
location of the far bifurcation cusp in the Zeeman catastrophe machine. See A256720
location of the least capacity point of a unit isosceles right triangle. See A275336
location of the maximum of (1-cos(x))/x. See A257451
location of the near bifurcation cusp in the Zeeman catastrophe machine. See A256719
Lochs's constant. See A086819
log 2 times the negative of Granville-Soundararajan constant. See A165361
log base phi of 2. See A104287
log Gamma integral LG_3 = Integral_{0..1} log(Gamma(x))^3 dx. See A258162
log Gamma integral LG_4 = Integral_{0..1} log(Gamma(x))^4 dx. See A258163
log Gamma integral LG_5 = Integral_{0..1} log(Gamma(x))^5 dx. See A258164
log((1+e)/2). See A224842
log(1 + exp(1)). See A085671
log(1 + log(1 + exp(1))). See A085672
log(1 + log(1 + log(1 + e))). See A085673
log(1 + log(1 + log(1 + log(1 + e)))). See A085674
log(1 + log(1 + log(1 + log(1 + Pi)))). See A085675
log(1 + log(1 + log(1 + Pi))). See A085670
log(1 + log(1 + Pi)). See A085669
log(1 + Pi). See A085668
log(1+sqrt(2))/sqrt(2). See A196525
log(1/2+1/sqrt(2))/sqrt(5). See A145435
log(100). See A016723
log(11). See A016634
log(11/2). See A016582
log(1151) / log(95). See A194362
log(12). See A016635
log(12)/log(2). See A020864
log(127) / log(16). See A194361
log(13). See A016636
log(13/2). See A016583
log(14). See A016637
log(15). See A016638
log(15/2). See A016584
log(16). See A016639
log(17). See A016640
log(17/2). See A016585
log(18). See A016641
log(19). See A016642
log(19/2). See A016586
log(2 * Pi). See A061444
log(2) + 1/3. See A259284
log(2)/3. See A193535
log(2)/log(3). See A102525
log(2)/Pi. See A284983
log(2)/Pi^2. See A118858
log(2)^2. See A253191
log(2+sqrt(3))/4. See A182023
log(2+sqrt(3))/sqrt(3). See A196530
log(20). See A016643
log(21). See A016644
log(21/2). See A016587
log(22). See A016645
log(23). See A016646
log(23/2). See A016588
log(24). See A016647
log(25). See A016648
log(25/2). See A016589
log(26). See A016649
log(262537412640768744)/sqrt(163). See A212131
log(27). See A016650
log(27)/log(27/4). See A280234
log(27/2). See A016590
log(27/4)/log(8). See A234468
log(28). See A016651
log(29). See A016652
log(29/2). See A016591
log(3)/2. See A156057
log(3)/log(1 + sqrt(2)). See A293812
log(3)/log(4). See A094148
log(3/2). See A016578
log(30). See A016653
log(31). See A016654
log(31/2). See A016592
log(32) = 5*log(2). See A016655
log(33). See A016656
log(33/2). See A016593
log(34). See A016657
log(35). See A016658
log(35/2). See A016594
log(36). See A016659
log(37). See A016660
log(37/2). See A016595
log(38). See A016661
log(39). See A016662
log(39/2). See A016596
log(4). See A016627
log(4)/log(3). See A100831
log(4/(1+sqrt(2))). See A157700
log(4/3). See A083679
log(40). See A016663
log(41). See A016664
log(41/2). See A016597
log(42). See A016665
log(43). See A016666
log(43/2). See A016598
log(44). See A016667
log(45). See A016668
log(45/2). See A016599
log(46). See A016669
log(47). See A016670
log(47/2). See A016600
log(48). See A016671
log(49). See A016672
log(49/2). See A016601
log(5). See A016628
log(5)/log(3). See A113209
log(5/2). See A016579
log(50). See A016673
log(51). See A016674
log(51/2). See A016602
log(52). See A016675
log(53). See A016676
log(53/2). See A016603
log(54). See A016677
log(55). See A016678
log(55/2). See A016604
log(56). See A016679
log(57). See A016680
log(57/2). See A016605
log(58). See A016681
log(59). See A016682
log(59/2). See A016606
log(6). See A016629
log(6)/log(1 + phi). See A113212
log(60). See A016683
log(61). See A016684
log(61/2). See A016607
log(62). See A016685
log(63). See A016686
log(63/2). See A016608
log(64). See A016687
log(640320^3)/sqrt(163), a Ramanujan constant producing 16 correct digits of Pi. See A253214
log(65). See A016688
log(65/2). See A016609
log(66). See A016689
log(67). See A016690
log(67/2). See A016610
log(68). See A016691
log(69). See A016692
log(69/2). See A016611
log(6^9*10^5)/25. See A230192
log(6^9*10^5)/30. See A230191
log(7). See A016630
log(7)/log(2). See A020860
log(7/2). See A016580
log(70). See A016693
log(71). See A016694
log(71/2). See A016612
log(72). See A016695
log(73). See A016696
log(73/2). See A016613
log(74). See A016697
log(75). See A016698
log(75/2). See A016614
log(76). See A016699
log(77). See A016700
log(77/2). See A016615
log(78). See A016701
log(79). See A016702
log(79/2). See A016616
log(8). See A016631
log(80). See A016703
log(81). See A016704
log(81/2). See A016617
log(82). See A016705
log(83). See A016706
log(83/2). See A016618
log(84). See A016707
log(85). See A016708
log(85/2). See A016619
log(86). See A016709
log(87). See A016710
log(87/2). See A016620
log(88). See A016711
log(89). See A016712
log(89/2). See A016621
log(9). See A016632
log(9/2). See A016581
log(90). See A016713
log(91). See A016714
log(91/2). See A016622
log(92). See A016715
log(93). See A016716
log(93/2). See A016623
log(94). See A016717
log(95). See A016718
log(95/2). See A016624
log(96). See A016719
log(97). See A016720
log(97/2). See A016625
log(98). See A016721
log(99). See A016722
log(99/2). See A016626
log(Gamma(1/10)). See A256612
log(Gamma(1/11)). See A256611
log(Gamma(1/12)). See A256066
log(Gamma(1/16)). See A256614
log(Gamma(1/24)). See A256615
log(Gamma(1/3)). See A256165
log(Gamma(1/4)). See A256166
log(Gamma(1/48)). See A256616
log(Gamma(1/5)). See A256167
log(Gamma(1/6)). See A255888
log(Gamma(1/7)). See A256609
log(Gamma(1/8)). See A255306
log(Gamma(1/9)). See A256610
log(Gamma(1/Pi)). See A257957
log(Gamma(log(2))). See A269558
log(Gamma(Pi)). See A269546
log(log(3)). See A194562
log(log(4)). See A196565
log(log(5)). See A196566
log(log(6)). See A196567
log(log(Pi)). See A073365
log(Pi). See A053510
log(Pi/2). See A094642
log(Pi^2). See A131659
log(R_c)/Pi, where R_c is Ramanujan's constant: 262537412640768743.999999999999250... = A060295. See A210963
log(sqrt(10)). See A274989
log(sqrt(2*Pi))/e, a constant appearing in the asymptotic expansion of (n!)^(1/n). See A248859
log(sqrt(Pi/2)). See A256358
logarithm of A112302. See A114124
logarithm of Glaisher's constant. See A225746
logarithm of Pi to base 2. See A216582
logarithm of the Gamma-function at 1/2. See A155968
logarithm of the generalized Glaisher-Kinkelin constant A(11) (negated). See A271175
logarithm of the generalized Glaisher-Kinkelin constant A(13). See A260663
logarithm of the generalized Glaisher-Kinkelin constant A(15) (negated). See A271177
logarithm of the generalized Glaisher-Kinkelin constant A(17). See A271178
logarithm of the generalized Glaisher-Kinkelin constant A(19) (negated). See A271179
logarithm of the generalized Glaisher-Kinkelin constant A(3) (negated). See A271170
logarithm of the generalized Glaisher-Kinkelin constant A(5). See A271172
logarithm of the generalized Glaisher-Kinkelin constant A(7) (negated). See A271173
logarithm of the generalized Glaisher-Kinkelin constant A(9). See A271174
logarithmic capacity of the unit disk. See A249205
logarithmic capacity of the unit equilateral triangle. See A249206
log_10 (11). See A154182
log_10 (12). See A154203
log_10 (13). See A154368
log_10 (14). See A154478
log_10 (15). See A154580
log_10 (16). See A154794
log_10 (17). See A154860
log_10 (18). See A154953
log_10 (19). See A155062
log_10 (20). See A155522
log_10 (21). See A155677
log_10 (22). See A155746
log_10 (23). See A155830
log_10 (24). See A155979
log_10 (5). See A153268
log_10 (6). See A153496
log_10 (7). See A153620
log_10 (8). See A153790
log_10 (phi) = log(phi) / log(10), where phi = golden ratio = (1 + sqrt(5))/2 = A001622. See A097348
log_10 2. See A007524
log_10 Pi. See A053511
log_10(3). See A114490
log_10(3+2*sqrt(2)). See A104178
log_10(4). See A114493
log_10(9). See A104139
log_10(e) = 0.43429448... See A114468
log_11 (10). See A154161
log_11 (12). See A154204
log_11 (13). See A154394
log_11 (14). See A154479
log_11 (15). See A154581
log_11 (16). See A154801
log_11 (17). See A154861
log_11 (18). See A154954
log_11 (19). See A155063
log_11 (2). See A152748
log_11 (20). See A155523
log_11 (21). See A155678
log_11 (22). See A155748
log_11 (23). See A155831
log_11 (24). See A155981
log_11 (3). See A152974
log_11 (4). See A153104
log_11 (5). See A153269
log_11 (6). See A153586
log_11 (7). See A153621
log_11 (8). See A153791
log_11 (9). See A154011
log_12 (10). See A154162
log_12 (11). See A154183
log_12 (13). See A154395
log_12 (14). See A154480
log_12 (15). See A154582
log_12 (16). See A154802
log_12 (17). See A154884
log_12 (18). See A154969
log_12 (19). See A155064
log_12 (2). See A152778
log_12 (20). See A155524
log_12 (21). See A155679
log_12 (22). See A155749
log_12 (23). See A155832
log_12 (24). See A155982
log_12 (28/13). See A234518
log_12 (3). See A153015
log_12 (4). See A153105
log_12 (5). See A153306
log_12 (6). See A153589
log_12 (7). See A153622
log_12 (8). See A153813
log_12 (9). See A154012
log_13 (10). See A154163
log_13 (11). See A154184
log_13 (12). See A154205
log_13 (14). See A154481
log_13 (15). See A154583
log_13 (16). See A154803
log_13 (17). See A154885
log_13 (18). See A154970
log_13 (19). See A155065
log_13 (2). See A152779
log_13 (20). See A155525
log_13 (21). See A155680
log_13 (22). See A155759
log_13 (23). See A155837
log_13 (24). See A155983
log_13 (3). See A153016
log_13 (4). See A153106
log_13 (5). See A153313
log_13 (6). See A153603
log_13 (7). See A153623
log_13 (8). See A153855
log_13 (9). See A154013
log_14 (10). See A154164
log_14 (11). See A154185
log_14 (12). See A154206
log_14 (13). See A154396
log_14 (15). See A154584
log_14 (16). See A154814
log_14 (17). See A154889
log_14 (18). See A154971
log_14 (19). See A155066
log_14 (2). See A152780
log_14 (20). See A155526
log_14 (21). See A155681
log_14 (22). See A155773
log_14 (23). See A155840
log_14 (24). See A155984
log_14 (3). See A153017
log_14 (4). See A153107
log_14 (5). See A153314
log_14 (6). See A153604
log_14 (7). See A153624
log_14 (8). See A153856
log_14 (9). See A154014
log_15 (10). See A154165
log_15 (11). See A154186
log_15 (12). See A154207
log_15 (13). See A154397
log_15 (14). See A154482
log_15 (16). See A154826
log_15 (17). See A154892
log_15 (18). See A154972
log_15 (19). See A155068
log_15 (2). See A152781
log_15 (20). See A155527
log_15 (21). See A155682
log_15 (22). See A155781
log_15 (23). See A155855
log_15 (24). See A155987
log_15 (3). See A153018
log_15 (4). See A153108
log_15 (5). See A153356
log_15 (6). See A153605
log_15 (7). See A153625
log_15 (8). See A153857
log_15 (9). See A154015
log_16 (10). See A154166
log_16 (11). See A154187
log_16 (12). See A154208
log_16 (13). See A154398
log_16 (14). See A154483
log_16 (15). See A154678
log_16 (17). See A154897
log_16 (18). See A154973
log_16 (19). See A155079
log_16 (20). See A155528
log_16 (21). See A155683
log_16 (22). See A155782
log_16 (23). See A155876
log_16 (24). See A155991
log_16 (3). See A153019
log_16 (5). See A153420
log_16 (6). See A153606
log_16 (7). See A153626
log_17 (10). See A154167
log_17 (11). See A154188
log_17 (12). See A154209
log_17 (13). See A154399
log_17 (14). See A154489
log_17 (15). See A154683
log_17 (16). See A154827
log_17 (18). See A154974
log_17 (19). See A155080
log_17 (2). See A152782
log_17 (20). See A155529
log_17 (21). See A155684
log_17 (22). See A155783
log_17 (23). See A155880
log_17 (24). See A155992
log_17 (3). See A153020
log_17 (4). See A153109
log_17 (5). See A153430
log_17 (6). See A153607
log_17 (7). See A153627
log_17 (8). See A153858
log_17 (9). See A154016
log_18 (10). See A154168
log_18 (11). See A154189
log_18 (12). See A154210
log_18 (13). See A154400
log_18 (14). See A154490
log_18 (15). See A154688
log_18 (16). See A154830
log_18 (17). See A154898
log_18 (19). See A155094
log_18 (2). See A152812
log_18 (20). See A155530
log_18 (21). See A155685
log_18 (22). See A155784
log_18 (23). See A155889
log_18 (24). See A155995
log_18 (3). See A153021
log_18 (4). See A153113
log_18 (5). See A153444
log_18 (6). See A153608
log_18 (7). See A153628
log_18 (8). See A153870
log_18 (9). See A154017
log_19 (10). See A154169
log_19 (11). See A154190
log_19 (12). See A154211
log_19 (13). See A154401
log_19 (14). See A154491
log_19 (15). See A154697
log_19 (16). See A154837
log_19 (17). See A154899
log_19 (18). See A154975
log_19 (2). See A152814
log_19 (20). See A155531
log_19 (21). See A155686
log_19 (22). See A155787
log_19 (23). See A155906
log_19 (24). See A156000
log_19 (3). See A153027
log_19 (4). See A153117
log_19 (5). See A153451
log_19 (6). See A153609
log_19 (7). See A153629
log_19 (8). See A153871
log_19 (9). See A154018
log_2 (14). See A154462
log_2 (15). See A154540
log_2 (17). See A154847
log_2 (18). See A154905
log_2 (19). See A154995
log_2 (20). See A155172
log_2 (21). See A155536
log_2 (22). See A155693
log_2 (23). See A155793
log_2 (5) - log_3 (7). See A236023
log_2 e. See A007525
log_2(10). See A020862
log_2(11). See A020863
log_2(13). See A152590
log_2(24) = 3+log_2(3). See A155921
log_2(3). See A020857
log_2(5). See A020858
log_2(6) See A020859
log_2(9) See A020861
log_2(phi), the logarithm to base 2 of phi, the "golden ratio" (1+sqrt(5))/2. See A242208
log_20 (10). See A154170
log_20 (11). See A154191
log_20 (12). See A154212
log_20 (13). See A154433
log_20 (14). See A154492
log_20 (15). See A154705
log_20 (16). See A154838
log_20 (17). See A154900
log_20 (18). See A154976
log_20 (19). See A155115
log_20 (2). See A152821
log_20 (21). See A155687
log_20 (22). See A155789
log_20 (23). See A155907
log_20 (24). See A156015
log_20 (3). See A153035
log_20 (4). See A153124
log_20 (5). See A153454
log_20 (6). See A153610
log_20 (7). See A153630
log_20 (8). See A153872
log_20 (9). See A154019
log_21 (10). See A154171
log_21 (11). See A154192
log_21 (12). See A154213
log_21 (13). See A154434
log_21 (14). See A154499
log_21 (15). See A154707
log_21 (16). See A154839
log_21 (17). See A154901
log_21 (18). See A154977
log_21 (19). See A155129
log_21 (2). See A152825
log_21 (20). See A155532
log_21 (22). See A155790
log_21 (23). See A155909
log_21 (24). See A156028
log_21 (3). See A153097
log_21 (4). See A153131
log_21 (5). See A153455
log_21 (6). See A153611
log_21 (7). See A153632
log_21 (8). See A153895
log_21 (9). See A154020
log_22 (10). See A154172
log_22 (11). See A154193
log_22 (12). See A154214
log_22 (13). See A154459
log_22 (14). See A154509
log_22 (15). See A154718
log_22 (16). See A154842
log_22 (17). See A154902
log_22 (18). See A154978
log_22 (19). See A155165
log_22 (2). See A152858
log_22 (20). See A155533
log_22 (21). See A155690
log_22 (23). See A155910
log_22 (24). See A156029
log_22 (3). See A153098
log_22 (4). See A153132
log_22 (5). See A153456
log_22 (6). See A153612
log_22 (7). See A153633
log_22 (8). See A153971
log_22 (9). See A154098
log_23 (10). See A154173
log_23 (11). See A154194
log_23 (12). See A154215
log_23 (13). See A154460
log_23 (14). See A154527
log_23 (15). See A154719
log_23 (16). See A154845
log_23 (17). See A154903
log_23 (18). See A154993
log_23 (19). See A155166
log_23 (2). See A152882
log_23 (20). See A155534
log_23 (21). See A155691
log_23 (22). See A155791
log_23 (24). See A156030
log_23 (3). See A153099
log_23 (4). See A153163
log_23 (5). See A153457
log_23 (6). See A153613
log_23 (7). See A153735
log_23 (8). See A154006
log_23 (9). See A154102
log_24 (11). See A154195
log_24 (2). See A152901
log_24 (20). See A155535
log_24 (23). See A155920
log_24 (3). See A153100
log_24 (6). See A153614
log_24(10). See A154174
log_24(12). See A154216
log_24(13). See A154461
log_24(14). See A154538
log_24(15). See A154735
log_24(16). See A154846
log_24(17). See A154904
log_24(18). See A154994
log_24(19). See A155168
log_24(21). See A155692
log_24(22). See A155792
log_24(4). See A153200
log_24(5). See A153458
log_24(7). See A153736
log_24(8). See A154007
log_24(9). See A154116
log_3 (11). See A154175
log_3 (12). See A154196
log_3 (13). See A154217
log_3 (14). See A154463
log_3 (15). See A154542
log_3 (16). See A154751
log_3 (17). See A154848
log_3 (19). See A155003
log_3 (21). See A155541
log_3 (22). See A155694
log_3 (23). See A155808
log_3 (24). See A155922
log_3 (6). See A153459
log_3 20. See A102447
log_3(10). See A152566
log_3(18). See A152549
log_3(25). See A228375
log_3(26). See A152564
log_3(7). See A152565
log_3(8). See A113210
log_4 (10). See A154155
log_4 (11). See A154176
log_4 (12). See A154197
log_4 (13). See A154224
log_4 (14). See A154464
log_4 (15). See A154543
log_4 (17). See A154849
log_4 (18). See A154909
log_4 (19). See A155004
log_4 (20). See A155183
log_4 (21). See A155545
log_4 (22). See A155695
log_4 (23). See A155818
log_4 (24). See A155936
log_4 (5). See A153201
log_4 (6). See A153460
log_4 (7). See A153615
log_5 (10). See A154156
log_5 (11). See A154177
log_5 (12). See A154198
log_5 (13). See A154265
log_5 (14). See A154465
log_5 (15). See A154564
log_5 (16). See A154759
log_5 (17). See A154850
log_5 (18). See A154910
log_5 (19). See A155035
log_5 (2). See A152675
log_5 (20). See A155184
log_5 (21). See A155553
log_5 (22). See A155696
log_5 (23). See A155821
log_5 (24). See A155958
log_5 (3). See A152914
log_5 (4). See A153101
log_5 (6). See A153461
log_5 (7). See A153616
log_5 (8). See A153739
log_5 (9). See A154008
log_6 (10). See A154157
log_6 (11). See A154178
log_6 (12). See A154199
log_6 (13). See A154278
log_6 (14). See A154466
log_6 (15). See A154567
log_6 (16). See A154776
log_6 (17). See A154856
log_6 (18). See A154911
log_6 (19). See A155044
log_6 (2). See A152683
log_6 (20). See A155490
log_6 (21). See A155554
log_6 (22). See A155697
log_6 (23). See A155823
log_6 (24). See A155959
log_6 (3). See A152935
log_6 (4). See A153102
log_6 (5). See A153202
log_6 (7). See A153617
log_6 (8). See A153754
log_6 (9). See A154009
log_7 (10). See A154158
log_7 (11). See A154179
log_7 (12). See A154200
log_7 (13). See A154294
log_7 (14). See A154467
log_7 (15). See A154572
log_7 (16). See A154793
log_7 (17). See A154857
log_7 (18). See A154912
log_7 (19). See A155059
log_7 (2). See A152713
log_7 (20). See A155496
log_7 (21). See A155591
log_7 (22). See A155735
log_7 (23). See A155824
log_7 (24). See A155964
log_7 (3). See A152945
log_7 (4). See A153103
log_7 (5). See A153203
log_7 (6). See A153463
log_7 (8). See A153755
log_8 (10). See A154159
log_8 (11). See A154180
log_8 (12). See A154201
log_8 (13). See A154309
log_8 (14). See A154468
log_8 (15). See A154574
log_8 (17). See A154858
log_8 (18). See A154927
log_8 (19). See A155060
log_8 (20). See A155502
log_8 (21). See A155675
log_8 (22). See A155741
log_8 (23). See A155827
log_8 (24). See A155975
log_8 (3). See A152956
log_8 (5). See A153204
log_8 (6). See A153493
log_8 (7). See A153618
log_8 (9). See A154010
log_9 (10). See A154160
log_9 (11). See A154181
log_9 (12). See A154202
log_9 (13). See A154339
log_9 (14). See A154469
log_9 (15). See A154578
log_9 (17). See A154859
log_9 (18). See A154947
log_9 (19). See A155061
log_9 (2). See A152747
log_9 (20). See A155503
log_9 (21). See A155676
log_9 (22). See A155743
log_9 (23). See A155829
log_9 (24). See A155976
log_9 (5). See A153205
log_9 (6). See A153495
log_9 (7). See A153619
log_9 (8). See A153756
log_gamma(e) where gamma is the Euler-Mascheroni constant. See A182526
log_gamma(i) where gamma is the Euler-Mascheroni constant and i is the imaginary unit. See A182528
log_gamma(phi) where gamma is the Euler-Mascheroni constant and phi is the golden ratio. See A182527
log_gamma(Pi) where gamma is the Euler-Mascheroni constant. See A182524
log_phi(gamma) where phi is the golden ratio and gamma is the Euler-Mascheroni constant. See A182545
log_phi(i) where phi is the golden ratio and i is the imaginary unit. See A182546
log_phi(Pi), where phi is the golden ratio. See A182516
log_Pi 10. See A235955
log_Pi(2). See A104288
log_Pi(3). See A293079
log_Pi(e). See A182499
log_Pi(phi), where phi is the golden ratio. See A182501
loop arc length of the Maclaurin trisectrix. See A138499
lower bound of the Berry-Esseen constant. See A245638
lower bound using Shannon entropy arising in randomly projected hypercubes. See A143148
lower limit of A139250(i)/i^2. See A195853
lower limit of A147562(i)/i^2. See A261313
lower limit of A162795(i)/i^2. See A261895
lower limit of the convergents of the continued fraction [1, -1/2, 1/4, -1/8, ... ]. See A229988
lower limit of the convergents of the continued fraction [1, 1/2, 1/4, 1/8, ... ]. See A229981
lower limit of the convergents of the continued fraction [1, 1/3, 1/9, 1/27, ... ]. See A229985
lower limit of the convergents of the continued fraction [1/2, 1/4, 1/8, ... ]. See A229983
lowest Dirichlet eigenvalue of Laplacian within the unit-edged regular pentagon. See A262823
lowest Dirichlet eigenvalue of the Laplacian within a certain L-shaped region. See A262701
lowest Dirichlet eigenvalue of the Laplacian within the unit-edged regular hexagon. See A263202
Ls_3(Pi), the value of the 3rd basic generalized log-sine integral at Pi (negated). See A258749
Ls_3(Pi/3), the value of the 3rd basic generalized log-sine integral at Pi/3 (negated). See A258759
Ls_4(Pi), the value of the 4th basic generalized log-sine integral at Pi. See A258750
Ls_4(Pi/3), the value of the 4th basic generalized log-sine integral at Pi/3. See A258760
Ls_5(Pi), the value of the 5th basic generalized log-sine integral at Pi (negated). See A258751
Ls_5(Pi/3), the value of the 5th basic generalized log-sine integral at Pi/3 (negated). See A258761
Ls_6(Pi), the value of the 6th basic generalized log-sine integral at Pi. See A258752
Ls_6(Pi/3), the value of the 6th basic generalized log-sine integral at Pi/3. See A258762
Ls_7(Pi), the value of the 7th basic generalized log-sine integral at Pi (negated). See A258753
Ls_7(Pi/3), the value of the 7th basic generalized log-sine integral at Pi/3 (negated). See A258763
Ls_8(Pi), the value of the 8th basic generalized log-sine integral at Pi. See A258754
Lucas binary number, Sum_{k>0} 1/2^L(k), where L(k) = A000032(k). See A121821
Lucas factorial constant. See A218490
Lucas nested (A000204) radical. See A151558
L^2/Pi where L is the lemniscate constant A062539. See A254794
L_2 = -integral_{0..Pi/2} log(2*sin(x/2))^2 dx, a constant appearing in the evaluation of Euler double sums not expressible in terms of well-known constants. See A247508
Lévy's constant. See A086702

### Start of section M

m = (1-1/e^2)/2, one of Renyi's parking constants. See A247847
m(3) = Sum_{n>=0} 1/n!!!, the 3rd reciprocal multifactorial constant. See A288055
m(4) = Sum_{n>=0} 1/n!!!!, the 4th reciprocal multifactorial constant. See A288091
m(5) = Sum_{n>=0} 1/n!5, the 5th reciprocal multifactorial constant. See A288092
m(6) = Sum_{n>=0} 1/n!6, the 6th reciprocal multifactorial constant. See A288093
m(7) = Sum_{n>=0} 1/n!7, the 7th reciprocal multifactorial constant. See A288094
m(8) = Sum_{n>=0} 1/n!8, the 8th reciprocal multifactorial constant. See A288095
m(9) = Sum_{n>=0} 1/n!9, the 9th reciprocal multifactorial constant. See A288096
m, where y=m*x is the line through (0,0) which meets the curve y=cos(3x) orthogonally at a point (x,y) satisfying 0<x<2*pi. See A196997
M2 = 1 - 2*M where M is the MRB constant A037077. See A173273
Madelung constant (negated) for calcium fluoride CaF_2. See A182567
Madelung constant (negated) for cuprous oxide Cu_2O. See A182565
Madelung constant (negated) for face-centered cubic lattice. See A085469
Madelung constant (negated) for the simple cubic lattice. See A181152
Madelung constant (negated) for zinc sulphide ZnS. See A182566
Madelung type constant C(1|1/4) (negated). See A257870
Madelung type constant C(2|1/2) (negated). See A257871
Madelung type constant C(4|1) (negated). See A257872
magnetic permeability of vacuum in SI units, mu_0 = 4*Pi*10^-7 N A^-2, an assigned metrological constant. See A019694
Markoff number asymptotic density constant. See A261613
mass energy equivalent of the charged pions pi^+ and pi^- in MeV. See A285264
mass energy equivalent of the neutral pion pi^0 in MeV. See A285265
Masser-Gramain constant. See A086057
Matthews' constant C_2, an analog of Artin's constant for primitive roots. See A271798
Matthews' constant C_3, an analog of Artin's constant for primitive roots. See A271869
Matthews' constant C_4, an analog of Artin's constant for primitive roots. See A271877
maximal circumradius of a planar convex set containing the origin but no other lattice point. See A244054
maximal success probability of the CHSH game. See A201488
maximal value of function alpha(n) = alpha-deviation from primality of number n = log_n(sigma(n)) - log_n(n+1) = log_n[sigma(n) / (n+1)] for n = 12, when alpha(12) = log_12(sigma(12)) - log_12(12+1) = log_12(28) - log_12(13) = log_12 (28/13) = 0,308766187…; alpha(p) = 0 for p = prime. See A234518
maximal value of function beta(n) = sigma(n)^(1/n) - (n+1)^(1/n) for n = 4, where beta(n) is called the beta-deviation from primality of number n (see A234520). Lim_n->infinity beta(n) = 0. See A234522
maximal value of function F[a(n); b(n)] for pairs of complements a(n) and b(n) of natural numbers A000027, where a(n) = odd numbers (A005408) and b(n) = even numbers (A005843); see Comments for the definition of function F[a(n); b(n)]. See A227569
maximal width of a Reuleaux triangle avoiding all vertices of the integer square lattice. See A244046
maximal zero x(3) of the function F(x) = f(f(x)) - x, where f(x) = cos(x) - sin(x). See A216863
maximum difference between a Pearson correlation coefficient and a Spearman correlation coefficient, assuming a bivariate normal distribution and infinite sample size. See A228438
maximum imaginary value at which the Pochhammer limit lim_{k->Infinity} Product_{i=0..k}(z + i/k) converges. See A090463
maximum M(4) of the ratio (sum{k=1,...,4} (x(1)*x(2)*...*x(k))^(1/k))/(x(1) + ... + x(4)) taken over x(1), ..., x(4) > 0. See A219245
maximum M(5) of the ratio (sum{k=1,...,5} (x(1)*x(2)*...*x(k))^(1/k))/(x(1) + ... + x(5)) taken over x(1), ..., x(5) > 0. See A219246
maximum M(6) of the ratio (sum{k=1,...,6} (x(1)*x(2)*...*x(k))^(1/k))/(x(1) + ... + x(6)) taken over x(1), ..., x(6) > 0. See A219336
maximum M(7) of the ratio (sum_{k=1,...,7} (x(1)*x(2)*...*x(k))^(1/k))/(x(1) + ... + x(7)) taking over x(1), ..., x(7) > 0. See A249403
maximum of (1-cos(x))/x. See A257452
maximum of (cos(x))^2+(sin(2*Pi*x))^2. See A197828
maximum of (cos(x))^2+(sin(3*Pi*x))^2. See A197834
maximum of (cos(x))^2+(sin(3x))^2. See A197588
maximum of (cos(x))^2+(sin(4x))^2. See A197759
maximum of (cos(x))^2+(sin(Pi*x))^2. See A197822
maximum of Planck's radiation function, without its dimensionless coefficient 15/Pi^4. See A255273
maximum of Planck's radiation function. See A245261
maximum of the function f(x) = log(cos(sin(x)))/log(sin(cos(x))), x in (0,Pi/2). See A215832
maximum of the function f(x) = x*Sum_{n>=1}n^2*(2*n^2*x^2-3)*exp(-n^2*x^2). See A265180
maximum performance (operations per second) of an "ultimate laptop". See A260849
maximum possible value of A B C-8 omega^3. See A133845
maximum probability that the convex hull of four points, chosen at random inside a convex planar region, is a quadrilateral (Sylvester's four-point problem). See A242780
maximum real value at which the Pochhammer limit lim_{k->infinity} Product_{i=0..k} (z + i/k) converges. See A090462
maximum value of Dedekind eta(sqrt(-1)*x), x > 0. See A097079
maximum value of f(x) = x - log(x)^log(x). See A226776
maximum value of r such that the non-integer sequence, f(n+1) = exp(f(n)/f(n-1)) - r, grows monotonically, with f(0) = 1 and f(1) = 1. See A248926
maximum value of the q-Pochhammer symbol along [ -1, 1]. See A143440
maximum value p>0, such that (cos(sin(x)))^p >= sin(cos(x)), x in (0,Pi/2). See A215833
maximum value reached by the function -2*x*log(x)-2*x*(1-x) in the interval (0,1]. See A226469
maximum value reached by the function x-x^2+x^2 log(x) in the interval [0,1]. See A226604
mean car density associated with Solomon's variation in Renyi's one-dimensional parking problem. See A242943
mean cluster density for bond percolation on the triangular lattice. See A245720
mean distance between two points picked at random in a half-disk. See A130203
mean distance between two points picked at random in a quarter-disk. See A130204
mean Euclidean distance from a point in a 3D box to the surfaces. See A130590
mean Euclidean distance from a point in a unit 4D cube to the faces (named B_4(1) in Bailey's paper). See A254979
mean length of a line segment picked at random in a 3, 4, 5 (right) triangle. See A180307
mean length of a line segment picked at random in a 30-60-90 (right) triangle. See A180308
mean number of comparisons (moment sum of index 2) in the basic continued fraction sign algorithm ("BCF-sign"). See A074903
mean number of iterations in a comparison algorithm using centered continued fractions, a constant related to Vallée's constant. See A289252
mean number of iterations in comparing two numbers via their continued fractions. See A074903
mean perimeter of a quadrilateral inscribed in a square of unit side. See A115456
mean reciprocal Euclidean distance from a point in a unit 4D cube to the faces (named B_4(-1) in Bailey's paper). See A254980
mean reciprocal Euclidean distance from a point in a unit cube to the faces (named B_3(-1) in Bailey's paper). See A254968
mean s-cluster density for p=1/2. See A086268
mean square width of the regular tetrahedron. See A196654
mean value over all positive integers of a function giving the least quadratic nonresidue modulo a given odd integer (this function is precisely defined in A053761). See A249271
mean value over all positive integers of the least prime not dividing a given integer. See A249270
Mersenne prime 2^20996011 - 1. See A089578
Mersenne prime 2^74207281 - 1. See A267875
Mertens' constant B_3 minus Euler's constant. See A138312
Mertens' constant, which is the limit of Sum{1/p(i), i=1..k } - log(log(p(k))) as k goes to infinity, where p(i) is the i-th prime number. See A077761
Michael Trott's constant: continued fraction expansion (allowing 0's) begins in same way as decimal expansion. See A039662
middle zero x(2) of the function F(x) = f(f(x)) - x, where f(x) = cos(x) - sin(x). See A206291
midsphere radius in a regular dodecahedron with unit edges. See A239798
Mills's constant, assuming the Riemann Hypothesis is true. See A051021
min value of F(x) := cos(sin(x)) - sin(cos(x)), x in R. See A215670
minimal radius of a circle that contains 12 non-overlapping unit disks. See A282279
minimal value of function gamma(n) = log_2(n+1) - log_tau(n) (sigma(n)) for n = 4, where gamma(n) is called the gamma-deviation from primality of the number n (see A236022). See A236023
minimal value of the function delta(n) = (n+1)^(1/2) - sigma(n)^(1/tau(n)) for n = 4, where delta(n) is called the delta-deviation from primality of the number n (see A236025). See A236027
minimal zero x(1) of the function F(x) = f(f(x)) - x, where f(x) = cos(x) - sin(x). See A216891
minimum ripple factor for a fifth-order, reflectionless, Chebyshev filter. See A293409
minimum ripple factor for a ninth-order, reflectionless, Chebyshev filter. See A293416
minimum ripple factor for a reflectionless, Chebyshev filter, in the limit where the order approaches infinity. See A293417
minimum ripple factor for a seventh-order, reflectionless, Chebyshev filter. See A293415
minimum surface index of a closed cone. See A232815
minimum surface index of a closed cylinder. See A232813
minimum surface index of a half-open cylinder. See A232814
minimum surface index of an open cone. See A232816
minimum total length of lines tying together the five points of a regular pentagon having unit sides. See A245263
Modified Bessel Function I of order 0 at 1. See A197036
modified Struve L-function of order 0 at 1. See A197037
modulus of the fixed point of -exp(z) in C congruent with the branch K=1 of log(z)+2*Pi*K*i. See A276761
modulus of the fixed point of exp(z) in C congruent with the branch K=1 of log(z)+2*Pi*K*i. See A277683
modulus of the infinite nested power (1+(1+(1+...)^i)^i)^i, with i being the imaginary unit. See A272877
molar gas constant R. See A070064
molar gas constant R. See A081822
molar volume of an ideal gas. See A248503
molar volume of an ideal gas. See A271369
moment derivative W_3'(0) associated with the radial probability distribution of a 3-step uniform random walk. See A244996
moment derivative W_3'(2) associated with the radial probability distribution of a 3-step uniform random walk. See A245025
moment derivative W_4'(0) associated with the radial probability distribution of a 4-step uniform random walk. See A244997
moment derivative W_4'(2) associated with the radial probability distribution of a 4-step uniform random walk. See A245026
moment derivative W_5'(0) associated with the radial probability distribution of a 5-step uniform random walk. See A244999
moment of order 1 at Pi/3 of Ls_4, where Ls_4 is a generalized log-sine integral. See A240947
MRB constant. See A037077
Mrs. Miniver's constant. See A255899
mu, a continued fraction first constructed from the Fibonacci numbers (A000045). See A130701
multiple zeta value (Euler sum) zetamult(2,3). See A258986
multiple zeta value (Euler sum) zetamult(2,4). See A258989
multiple zeta value (Euler sum) zetamult(3,2). See A258983
multiple zeta value (Euler sum) zetamult(3,3). See A258987
multiple zeta value (Euler sum) zetamult(3,4). See A258990
multiple zeta value (Euler sum) zetamult(4,2). See A258984
multiple zeta value (Euler sum) zetamult(4,3). See A258988
multiple zeta value (Euler sum) zetamult(4,4). See A258991
multiple zeta value (Euler sum) zetamult(5,2). See A258985
multiple zeta value (Euler sum) zetamult(5,3). See A258982
multiple zeta value (Euler sum) zetamult(6,2). See A258947
muon mass energy equivalent in J. See A254292
muon mass in kg. See A254291
muon-to-electron mass ratio. See A057720
Murata's constant product(1 + 1/(p-1)^2), p prime >= 2). See A065485
Myrberg point. See A218453
m_2 = (2-1/e)/4, one of Renyi's parking constants, the mean car density in case "monomer with nearest neighbor exclusion" for the 2 x infinity strip. See A247848
m_3, the expected number of returns to the origin in a three-dimensional random walk restricted to the region x >= y >= z. See A259833
M_5, the 5-dimensional analog of Madelung's constant (negated). See A264156
M_6, the 6th Madelung constant. See A247040
M_7, the 7-dimensional analog of Madelung's constant (negated). See A264157
M_8, the 8th Madelung constant (negated). See A261805
m_e*c in SI units (kg*m/s), where m_e is the electron mass and c is the speed of light in vacuum. See A229952
m_p*c in SI units (kg*m/s), where m_p is the proton mass and c is the speed of light in vacuum. See A230844

### Start of section N

Narcissus constant, the second real solution of the equation x^(x-1) = x+1. See A246825
natural logarithm of 10. See A002392
natural logarithm of 2. See A002162
natural logarithm of 3. See A002391
natural logarithm of 63/8. See A161174
natural logarithm of golden ratio. See A002390
natural logarithm of Khintchine's constant. See A163243
natural logarithm of Pi^(1/Pi). See A231737
natural logarithm of Pi^Pi. See A231736
negated argument of i!. See A212880
negated constant cos(1) - sin(1) = -0.3011686789... See A143624
negated cotangent of the golden ratio. That is, the decimal expansion of -cot((1+sqrt(5))/2). See A139348
negated cotangent of the golden ratio. That is, the decimal expansion of -cot((1+sqrt(5))/2). See A139348
negated digamma function at 3/5. See A200137
negated Dirichlet Prime L-function of the non-principal character mod 3 at 2. See A175641
negated Dirichlet Prime L-function of the real non-principal character mod 5 at 1. See A175642
negated Dirichlet Prime L-function of the real non-principal character mod 6 at 1. See A175643
negated imaginary part of i!. See A212878
negated imaginary part of the derivative of the Dirichlet function eta(z), at z=i, the imaginary unit. See A271526
negated imaginary part of the derivative of the Riemann function zeta(z) at z=i, the imaginary unit. See A271522
negated secant of the golden ratio. That is, the decimal expansion of -sec((1+sqrt(5))/2). See A139349
negated secant of the golden ratio. That is, the decimal expansion of -sec((1+sqrt(5))/2). See A139349
negated tangent of the golden ratio. That is, the decimal expansion of -tan((1+sqrt(5))/2). See A139347
negated tangent of the golden ratio. That is, the decimal expansion of -tan((1+sqrt(5))/2). See A139347
negated value of the digamma function at 1/5. See A200135
negated value of the digamma function at 1/6. See A222457
negated value of the digamma function at 1/8. See A250129
negated value of the digamma function at 2/3. See A200064
negated value of the digamma function at 2/5. See A200136
negated value of the digamma function at 3/4. See A200134
negated value of the digamma function at 4/5. See A200138
negated value of the digamma function at 5/6. See A222458
negated value of the integral over (1/(1-y) + 1/log(y))*log(1-y)/y between 0 and 1. See A229156
negated value of the smallest real root of the quintic equation x^5 + 2*x^4 - 2*x^3 - x^2 + 2*x -1 = 0. See A103546
negated value of the sum_q [log(1-1/q)+1/q] over the semiprimes q. See A154943
negated x-coordinate of the inflection point of product{1 + x^k, k >= 1} that has maximal x-coordinate. See A257396
negated x-coordinate of the inflection point of product{1 + x^k, k >= 1} that has minimal x-coordinate. See A257394
negative derivative of Dawson integral at its inflection points. See A247445
negative imaginary part of Sum_{n=0..inf}(1/c_n), c_0=1, c_n=c_(n-1)*(n+I). See A231533
negative of constant M(3,1) arising in Mertens and Meissel-Mertens constants for sums over arithmetic progressions. See A161529
negative of Granville-Soundararajan constant. See A126689
negative of previously unknown transition arising in exact dynamics for fully connected nonlinear network. See A173685
Negative of the decimal expansion of the electron spin g-factor. See A195022
negative of the first derivative of the Gamma Function at 1/2. See A131265
negative of the limit of the continued fraction 1/(1-2/(2-2/(3-2/(4-... in terms of Bessel functions. See A222471
negative real part of z0, the smallest second-quadrant solution of z = Cos(z). See A138284
negative reciprocal of the real root of x^3 - 2x + 2. See A273065
nested logarithm log(1+log(2+log(3+log(4+...)))). See A277313
nested radical: Sqrt(1^2 + CubeRoot(2^3 + 4thRoot(3^4 + 5thRoot(4^5 + ... See A099877
nested surd Pi-thRoot[1 + Pi-thRoot[1 + Pi-thRoot[1 + ...]]]. See A100939
nested surd sqrt(e + sqrt(e + sqrt(e + ...))). See A100943
nested surd sqrt(phi + sqrt(phi + sqrt(phi + sqrt(phi + ... )))) where phi is golden ratio = (1 + sqrt(5))/2; see A001622. See A275828
nested surd sqrt(Pi + sqrt(Pi + sqrt(Pi + ...))). See A100941
nested surd Sqrt[Pi + CubeRoot[Pi + 4thRoot[Pi + 5thRoot[Pi + ...]]]]. See A100945
neutron mass (kg). See A230848
neutron mass (mass units). See A003675
neutron mass energy equivalent in MeV. See A276558
neutron mass equivalent in J. See A254289
neutron-to-electron mass ratio. See A006833
neutron-to-proton mass ratio. See A006834
Newton's gravitational constant in SI units. See A070058
Nicolas's constant in his condition for the Riemann Hypothesis (RH). See A233825
ninth (of 10) decimal selvage number; the n-th digit of a decimal selvage number, x, is equal to the tenths digit of n*x. See A071876
ninth derivative of the infinite power tower function x^x^x... at x = 1/2. See A277530
ninth root of 3. See A011446
non-right-angle, in degrees, of unique 14th class of convex pentagonal tiling. See A186282
nonprime zeta function at 2. See A275647
nontrivial real solution of x^(3/2) = (3/2)^x. See A258500
nontrivial real solution of x^(5/2) = (5/2)^x. See A258501
nontrivial real solution of x^(7/2) = (7/2)^x. See A258502
nontrivial solution to Pi^a = Pi*a. See A280722
nontrivial zero of the dilogarithm on the real line. See A200336
nonzero invariant of the Weierstrass elliptic function with half-periods 1/2 and i/2. See A133747
nonzero number x satisfying -x^2+1=e^x. See A201750
nonzero number x satisfying x^2+2x+1=e^x. See A201890
nonzero number x satisfying x^2+x+1=e^x. See A201770
normalized asymptotic mean of omega(m) when m is one of the values <= n taken by Euler's phi totient function. See A272983
normalized Philo sum, Philo(ABC,G), where G=centroid of the 1,1,sqrt(2) right triangle ABC. See A195436
normalized Philo sum, Philo(ABC,G), where G=centroid of the 1,2,sqrt(5) right triangle ABC. See A195445
normalized Philo sum, Philo(ABC,G), where G=centroid of the 1,3,sqrt(10) right triangle ABC. See A195449
normalized Philo sum, Philo(ABC,G), where G=centroid of the 1,sqrt(2),sqrt(3) right triangle ABC. See A195474
normalized Philo sum, Philo(ABC,G), where G=centroid of the 1,sqrt(3),2 right triangle ABC. See A195478
normalized Philo sum, Philo(ABC,G), where G=centroid of the 2,3,sqrt(13) right triangle ABC. See A195453
normalized Philo sum, Philo(ABC,G), where G=centroid of the 2,sqrt(5),3 right triangle ABC. See A195482
normalized Philo sum, Philo(ABC,G), where G=centroid of the 3,4,5 right triangle ABC. See A195411
normalized Philo sum, Philo(ABC,G), where G=centroid of the 5,12,13 right triangle ABC. See A195424
normalized Philo sum, Philo(ABC,G), where G=centroid of the 7,24,25 right triangle ABC. See A195428
normalized Philo sum, Philo(ABC,G), where G=centroid of the 8,15,17 right triangle ABC. See A195432
normalized Philo sum, Philo(ABC,G), where G=centroid of the right triangle ABC having sidelengths (a,b,c)=(1,sqrt(r),r), where r=(1+sqrt(5))/2 (the golden ratio). See A195494
normalized Philo sum, Philo(ABC,G), where G=centroid of the right triangle ABC having sidelengths (a,b,c)=(r-1,r,sqrt(3)), where r=(1+sqrt(5))/2 (the golden ratio). See A195498
normalized Philo sum, Philo(ABC,G), where G=centroid of the sqrt(2),sqrt(3),sqrt(5) right triangle ABC. See A195457
normalized Philo sum, Philo(ABC,G), where G=centroid of the sqrt(2),sqrt(5),sqrt(7) right triangle ABC. See A195486
normalized Philo sum, Philo(ABC,G), where G=centroid of the sqrt(7),3,4 right triangle ABC. See A195490
normalized Philo sum, Philo(ABC,I), where I=incenter of the right triangle ABC having sidelengths (a,b,c)=(1,sqrt(r),r), where r=(1+sqrt(5))/2 (the golden ratio). See A195406
normalized Philo sum, Philo(ABC,I), where I=incenter of the right triangle ABC having sidelengths (a,b,c)=(r-1,r,sqrt(3)), where r=(1+sqrt(5))/2 (the golden ratio). See A195410
normalized Philo sum, Philo(ABC,I), where I=incenter of a 1,1,sqrt(2) right triangle ABC. See A195303
normalized Philo sum, Philo(ABC,I), where I=incenter of a 1,2,sqrt(5) right triangle ABC. See A195343
normalized Philo sum, Philo(ABC,I), where I=incenter of a 1,3,sqrt(10) right triangle ABC. See A195347
normalized Philo sum, Philo(ABC,I), where I=incenter of a 1,sqrt(2),sqrt(3) right triangle ABC. See A195372
normalized Philo sum, Philo(ABC,I), where I=incenter of a 1,sqrt(3),sqrt(1) right triangle ABC (angles 30, 60, 90). See A195380
normalized Philo sum, Philo(ABC,I), where I=incenter of a 2,3,sqrt(13) right triangle ABC. See A195358
normalized Philo sum, Philo(ABC,I), where I=incenter of a 2,5,sqrt(29) right triangle ABC. See A195362
normalized Philo sum, Philo(ABC,I), where I=incenter of a 2,sqrt(5),3 right triangle ABC. See A195385
normalized Philo sum, Philo(ABC,I), where I=incenter of a 28,45,53 right triangle ABC. See A195300
normalized Philo sum, Philo(ABC,I), where I=incenter of a 3,4,5 right triangle ABC. See A195285
normalized Philo sum, Philo(ABC,I), where I=incenter of a 3,4,5 right triangle ABC. See A195289
normalized Philo sum, Philo(ABC,I), where I=incenter of a 7,24,25 right triangle ABC. See A195292
normalized Philo sum, Philo(ABC,I), where I=incenter of a sqrt(2),sqrt(3),sqrt(5) right triangle ABC. See A195368
normalized Philo sum, Philo(ABC,I), where I=incenter of a sqrt(2),sqrt(5),sqrt(7) right triangle ABC. See A195389
normalized Philo sum, Philo(ABC,I), where I=incenter of a sqrt(3),sqrt(5),sqrt(8) right triangle ABC. See A195398
normalized Philo sum, Philo(ABC,I), where I=incenter of a sqrt(7),3,4 right triangle ABC. See A195402
normalized Philo sum, Philo(ABC,I), where I=incenter of an 8,15,17 right triangle ABC. See A195297
Norton's constant. See A143304
Not_Omega = 2-Omega. See A133250
number 1+2/(1+3/(1+5/(1+7/(1+11/(...))))), where the numerators are the primes. See A191815
number 1.31303673643358290638395160264... having continued fraction expansion 1, 3, 5, 7, 11, 13, 17, 19, ... See A127549
number 1/(1+1/(1+2/(1+3/(1+5/(1+7/(1+11/(1+13/(1+17/(1+19/(1+... )))))))))), where coefficients > 1 are the primes. See A191504
number 29.000694926917980144237135814... having continued fraction expansion 29, 1439, 4211, 7703, 12907, 14957, ... (A126555). See A127558
number 3.19451324273619331289098105345... having continued fraction expansion 3, 5, 7, 11, 13, 17, 19, ... (successive odd primes). See A127550
number 3.19644719338616871113868629540207517... having continued fraction expansion 3, 5, 11, 17, 29, 41, 59, 71, 101, 107, ... (lesser of twin primes A001359). See A127552
number 4.1636635147332912770473687837946011358... having continued fraction expansion 4, 6, 9, 12, 15, 18, 21, 26, 30, 34, 39, ... (arithmetical average of two consecutive odd primes A024675). See A127556
number 4.164393920313549053413239828743... having continued fraction expansion 4, 6, 12, 18, 30, 42, 60, 72, 102, ... (averages of twin primes A014574). See A127555
number 5.018865657377378233714156283... having continued fraction expansion 5, 53, 157, 173, 211, 257, 263, 373, 563, ... (balanced primes order one A006562). See A127557
number 5.1410381418412742236797378119983... having continued fraction expansion 5, 7, 11, 13, 17, 19, ... (successive odd primes starting from 5). See A127551
number 5.1413105308627310489... having continued fraction expansion 5, 7, 13, 19, 31, 43, 61, 73, 103, 109, 139, 151, 181, ... (greater of twin primes A006512). See A108170
number 734.000353982279850297391846... having continued fraction expansion 734, 2825, 5957, 10305, 13932, ... (interprimes of third order A126556). See A127559
number A = 1.8252076... which generates the densest possibly infinite sequence of primes a(n) = floor[A^(C^n)] for A < 2. That prime sequence is A243358. See A243370
number c = Sum_{n>=1} (zeta(n+1)-1)/n). See A085361
number c for which the curve y=1/(1+x^2) is tangent to the curve y=-c+cos(x), and 0<x<2*Pi. See A196823
number c for which the curve y=1/(1+x^2) is tangent to the curve y=c*cos(x), and 0<x<2*pi. See A196914
number c for which the curve y=1/(1+x^2) is tangent to the curve y=c*sin(x), and 0<x<2*pi. See A196832
number c for which the curve y=1/x is tangent to the curve y=c*sin(x), and 0<x<2*pi. See A196758
number c for which the curve y=1/x is tangent to the curve y=cos(x-c), and 0<x<2*pi; c=sqrt(r)-arccsc(r), where r=(1+sqrt(5))/2 (the golden ratio). See A196625
number c for which the curve y=1/x is tangent to the curve y=sin(x-c), and 0<x<2 pi; c=pi-sqrt(r)-arccos(r-1), where r=(1+sqrt(5))/2 (the golden ratio). See A196772
number c for which the curve y=c*cos(x) is tangent to the curve y=1/x, and 0<x<2*pi. See A196610
number c for which the curve y=c+1/x is tangent to the curve y=sin(x), and 0<x<2*pi. See A196774
number c for which the curve y=cos(x) is tangent to the curve y=(1/x)-c, and 0<x<2*pi. See A196619
number c satisfying c*log(c)=1+c. See A141251
number c satisfying c*log(c)=1/2+c. See A141252
number c such that the solution to the differential functional equation f'(x) = f(x-1) + f(x-2) is c^x. See A133446
number defined by the continued fraction shown below. See A086774
number defined by the continued fraction shown below. See A086775
number defined by x^x + x = 1. See A226568
number having (1,2,3,4,...) = A000027 as its factorial-nested interval sequence. See A269979
number having (1,2,3,4,...) as its Fibonacci-nested interval sequence. See A269802
number having (1,3,5,7,9,...) = A005408 as its factorial-nested interval sequence. See A269980
number having (2,4,6,8,10,...) = A005843 as its factorial-nested interval sequence. See A269981
number K > 1 such that the surface area equals the volume of Gabriel's horn from x=1 to x=K, where x is the radial (central) axis and Gabriel's horn is a function y=1/x rotated about the x-axis. See A101314
number of feet in a meter. See A224234
number of inches in a meter. See A224233
number of partitions of 1729, the second taxicab number, also called the Hardy-Ramanujan number. See A135041
number of yards in a meter. See A224235
number Sum_{n=1,oo} ksexp(n,3/2)^(-1). See A225037
number which results when the Boustrophedon transform of the continued fraction of e (A080408, A003417) is interpreted as a continued fraction. See A080409
number which results when the Boustrophedon transform of the continued fraction of gamma (A080410) is interpreted as a continued fraction. See A080411
number which results when the Boustrophedon transform of the continued fraction of Pi (A080406, A001203) is interpreted as a continued fraction. See A080407
number whose continued fraction expansion consists of the even numbers. See A279906
number whose continued fraction expansion consists of the perfect numbers (A000396). See A261827
number whose continued fraction expansion is A000001. See A173930
number whose continued fraction expansion is A292106. See A292107
number whose continued fraction expansion is formed by the difference of consecutive primes (A001223). See A229911
number whose continued fraction is 1, 2, 4, 8, 16, … . See A214070
number whose continued fraction is based on noncomposite numbers. See A191608
number whose continued fraction is given by A245920 (limit-reverse of an infinite Fibonacci word). See A245976
number whose continued fraction is given by A246127 (limiting block extension of an infinite Fibonacci word). See A246129
number whose continued fraction is the (2,1)-version of the infinite Fibonacci word A014675. See A245975
number whose Engel expansion is given by the sequence: 1,1,2,2,3,3,4,4,...Ceiling[n/2],... See A130820
number whose Engel expansion is the sequence of squares, that is, 1, 4, 9, 16,... See A130818
number whose Pierce expansion has the sequence of double factorial numbers (A000165) as coefficients. See A137988
number whose Pierce expansion has the sequence of factorial numbers (A000142) as coefficients. See A137986
number whose Pierce expansion has the sequence of Fibonacci numbers (A000045) as coefficients. See A135598
number whose simple continued fraction (A081086) has the smallest partial quotients such that the fractional remainders sum to unity. See A081087
number with continued fraction 2 + 3/5 + 7/11 + 13/17 + 19/23 + ... See A085825
number with continued fraction expansion 0, 1, 1, 2, 3, 5, ... (the Fibonacci numbers). See A073822
number with continued fraction expansion 0, 1, 11, 111, 1111, 11111 ... (the repunits). See A264934
number with continued fraction expansion 0, 1, 12, 123, 1234, 12345, 123456, ... (A007908). See A293577
number with continued fraction expansion 0, 1, 2, 3, 4, 5, 6, ... See A052119
number with continued fraction expansion 0, 1, 3, 6, 10, ... (the triangular numbers). See A073823
number with continued fraction expansion 0, 1, 4, 9, ... (the squares). See A073824
number with continued fraction expansion 0, 2, 4, 6, ... (the even numbers). See A073821
number with continued fraction expansion 0, 2, 4, 8, 16, ... (0 and positive powers of 2). See A096641
number with continued fraction expansion 1, 2, 3, 5, 7, 11, 13, 17, 19, ... See A152062
number with continued fraction expansion 1, 2, 4, 8, 16, 32, ... (powers of 2). See A275614
number with continued fraction expansion 2, 3, 5, 7, 11, 13, 17, 19, ... = 2.3130367364335829063839516 ... See A064442
number x > 1 defined by 2*log(x) = x-1. See A226278
number x defined by x^(x^x) = 27. See A140663
number x defined by x^x = 16. See A093590
number x defined by x^x+log(x)=0. See A226094
number x other than -2 defined by x*e^x = -2/e^2. See A226775
number x other than -3 defined by x*e^x = -3/e^3. See A226750
number x satisfying 0<x<2*pi and 2x=(1+x^2)*tan(x). See A196913
number x satisfying 0<x<2*pi and x^2+2x*tan(x)+1=0. See A196831
number x satisfying 2*x + 2 = exp(-x), negated. See A202353
number x satisfying 2x=(1+x^2)*sin(x) and 0<x<2*pi. See A196822
number x satisfying 2x=exp(-x). See A202356
number x satisfying 3x=exp(-x). See A202392
number x satisfying e*x = e^(-x). See A202357
number x satisfying e^(2x)-e^(-2x)=1. See A202541
number x satisfying e^(2x)-e^(-x)=1. See A202539
number x satisfying e^(3x)-e^(-3x)=1. See A202542
number x satisfying e^(3x)-e^(-x)=1. See A202540
number x satisfying e^(x/2) - e^(-x/2) = 1. See A202543
number x satisfying e^x-e^(-3x)=1. See A202538
number x satisfying log(x) = x/10. See A127314
number x satisfying log(x)=e^(-x) See A201942
number x satisfying log_10(x) = x/100. See A128804
number x satisfying x*2^x=3. See A196550
number x satisfying x*2^x=4. See A196551
number x satisfying x*2^x=5. See A196552
number x satisfying x*2^x=6. See A196553
number x satisfying x*2^x=e. See A196549
number x satisfying x*e^x=2. See A196515
number x satisfying x*e^x=3. See A196516
number x satisfying x*e^x=4. See A196517
number x satisfying x*e^x=5. See A196518
number x satisfying x*e^x=6. See A196519
number x satisfying x+3=exp(-x). See A202323
number x satisfying x+e=exp(-x). See A202354
number x satisfying x-1=exp(-x). See A202355
number x satisfying x^2+10=e^x. See A201749
number x satisfying x^2+2=e^x. See A201741
number x satisfying x^2+2x+2=e^x. See A201891
number x satisfying x^2+2x+3=e^x. See A201892
number x satisfying x^2+2x+4=e^x. See A201893
number x satisfying x^2+2x+5=e^x. See A201894
number x satisfying x^2+3=e^x. See A201742
number x satisfying x^2+3x+3=e^x. See A201900
number x satisfying x^2+3x+4=e^x. See A201901
number x satisfying x^2+3x+5=e^x. See A201902
number x satisfying x^2+4=e^x. See A201743
number x satisfying x^2+4x+5=e^x. See A201930
number x satisfying x^2+5=e^x. See A201744
number x satisfying x^2+6=e^x. See A201745
number x satisfying x^2+7=e^x. See A201746
number x satisfying x^2+8=e^x. See A201747
number x satisfying x^2+9=e^x. See A201748
number x satisfying x^2+x+2=e^x. See A201396
number x satisfying x^2+x+3=e^x. See A201562
number x satisfying x^2+x+4=e^x. See A201772
number x satisfying x^2+x+5=e^x. See A201889
number x satisfying x^2+x=e^x. See A201769

### Start of section O

odd Bessel moment s(5,1) (see the referenced paper about the elliptic integral evaluations of Bessel moments). See A273984
odd Bessel moment s(5,3) (see the referenced paper about the elliptic integral evaluations of Bessel moments). See A273985
odd Bessel moment s(5,5) (see the referenced paper about the elliptic integral evaluations of Bessel moments). See A273986
odd Bessel moment t(5,1) (see the referenced paper about the elliptic integral evaluations of Bessel moments). See A273989
odd Bessel moment t(5,3) (see the referenced paper about the elliptic integral evaluations of Bessel moments). See A273990
odd Bessel moment t(5,5) (see the referenced paper about the elliptic integral evaluations of Bessel moments). See A273991
odd limit of the harmonic power tower (1/2)^(1/3)^...^(1/(2n+1)). See A242760
of 5*Pi/12, 25*Pi/6 or 125*Pi/3. See A019691
offset at which two unit disks overlap by half each's area. See A133741
old estimate for Avogadro's constant. See A070062
Oloid's volume. See A215447
Omega prime-generating constant. See A086238
Omega, a constant related to an explicit form of the triple Gamma function Gamma_3 (negated). See A259494
one chronon (in seconds). See A281961
one deg^2 expressed in steradians (sr). See A231982
one of four fixed points (mod 1) of Minkowski's question mark function. See A048819
one of the Pell-Stevenhagen constants. See A242433
one of the values of i^i, namely exp(-5 pi / 2). See A101749
one real root of x^3-8x-10. See A160332
one real root of x^5-x-1. See A160155
one steradian (sr) expressed in deg^2. See A231981
One-ninth constant. See A072558
only number x>1 such that (x^x)^(x^x)= (x^(x^x))^x = x^((x^x)^x). See A001622
only positive real solution to x^2/2! - x^3/3! + x^5/5! - x^7/7! + x^11/11! - ... = 0, using the prime numbers (2, 3, 5, 7 ...) See A193743
only solution of x^(4/x^2) = x-1. See A182587
onset of logistic map 5-bifurcation. See A118452
onset of logistic map 6-bifurcation. See A118453
onset of logistic map 7-bifurcation. See A118746
open-tube surface index constant. See A232817
electron Compton wavelength in meters. See A230436
(2 + sqrt(2) + 5*log(1+sqrt(2)))/15. See A091505
constant B2 from the summatory function of the restricted divisor function. See A083342
Pi csch Pi. See A090986
Otter's asymptotic constant beta for the number of rooted trees. See A187770
Otter's asymptotic constant beta for the number of unrooted trees. See A086308
Otter's rooted tree constant: lim_{n->inf} A000081(n+1)/A000081(n). See A051491

### Start of section P

P/Pi, where P is the Universal parabolic constant (A103710). See A232716
paper-folding constant. See A143347
Paris constant. See A105415
Parity Prime Constant C = Sum[ (-1)^(k+1) * 1/2^Prime[k], {k,1,Infinity} ]. See A122153
Partial products of successive digits in the decimal expansion of Pi. See A074850
Partial sums of digits of decimal expansion of Euler's constant gamma. See A093084
Partial sums of digits of decimal expansion of golden ratio phi. See A093083
Partial sums of digits of the decimal expansion of Pi are in A046974. See A074850
partition factorial constant. See A259314
Passing the decimal expansion of Pi through the Fibonacci sieve. See A098712
Pear curve area See A193750
Pear curve length. See A193751
Pearson correlation coefficient where the difference between the Pearson correlation coefficient and the Spearman correlation coefficient is maximal, assuming a bivariate normal distribution and infinite sample size. See A228402
Pell constant. See A141848
Pell factorial constant. See A256831
Pentanacci constant: decimal expansion of limit of A001591(n+1)/A001591(n). See A103814
perimeter of Cairo and Prismatic tiles. See A214726
perimeter of the closed portion of the bow curve. See A118322
perimeter of the fourth Mandelbrot set lemniscate See A194474
perimeter of the second Mandelbrot set lemniscate. See A193781
perimeter variance of uniform random triangles. See A179258
Perrin's argument a (see below). See A218197
phi (Golden ratio): See A001622
phi(0), an auxiliary constant associated with Shapiro's cyclic sum constant lambda. See A245330
phi(1) where phi(x)=integral(t=0,infinity, e^-t/(x+t) dt ). See A073003
Phi(1/2, 2, 2), where Phi is the Lerch transcendent. See A274181
phi(exp(-2*Pi)), where phi(q) = Product_{n>=1} (1-q^n) is the Euler modular function. See A259149
phi(exp(-4*Pi)), where phi(q) = Product_{n>=1} (1-q^n) is the Euler modular function. See A259150
phi(exp(-8*Pi)), where phi(q) = Product_{n>=1} (1-q^n) is the Euler modular function. See A259151
phi(exp(-Pi)), where phi(q) = Product_{n>=1} (1-q^n) is the Euler modular function. See A259148
phi(exp(-Pi/2)), where phi(q) = Product_{n>=1} (1-q^n) is the Euler modular function. See A259147
phi*e, where phi = (1 + sqrt(5))/2. See A094885
phi*Pi, where phi = (1+sqrt(5))/2. See A094886
phi*sqrt(2), where phi = (1+sqrt(5))/2. See A094887
phi, the golden ratio, is given in A001622. See A105172
Phi, the real root of the equation 1/x = (x-1)^2. See A109134
phi/(phi^phi - 1), where phi is the golden ratio (1+sqrt(5))/2. See A144713
phi/e, where phi = (1+sqrt(5))/2. See A094880
phi/Pi, where phi = (1+sqrt(5))/2. See A094882
phi/sqrt(2), where phi = (1+sqrt(5))/2. See A094884
phi^(1/e), where phi is the golden ratio. See A182552
phi^(1/phi). See A185261
phi^(2/Pi), the base of golden spiral See A212224
phi^3 = 2 + sqrt(5). See A098317
phi^Pi, where phi is the golden ratio. See A212711
phi_3(3) = sqrt(3)/(12*Pi^2), an auxiliary constant in the computation of the radial density of a 4-step uniform random walk. See A244993
pi (or, digits of pi). See A000796
Pi (or, digits of Pi). See A000796
Pi * 2F3(1/2,1/2; 3/2,3/2,3/2; -Pi^2/4). See A175293
Pi * sqrt(2). See A063448
Pi * sqrt(2)/8. See A193887
Pi + 1/Pi. See A098801
Pi + arctan(e^Pi). See A094078
Pi + phi. See A237198
Pi - e + gamma, where gamma is Euler's constant (or the Euler-Mascheroni constant). See A211015
Pi - e. See A073244
Pi - phi. See A237200
Pi - sqrt(Pi^2 - 1). See A189088
Pi / (4*sqrt(6*Pi^2 - 72*log(2)^2)). See A260061
Pi and semiprime analog of A074496 First prime after e^n. Lim_{n->infinity} a(n+1)/a(n) = Pi. See A117881
Pi log(3)sqrt(3). See A086055
Pi rounded to n places. See A011546
Pi truncated to n places. See A011545
Pi truncated to numbers such that the partial sums of the decimal digits are perfect squares. See A276111
Pi written as a sequence of natural numbers avoiding duplicates. See A064809
Pi written in base 2. See A086994
Pi! (or Gamma(Pi+1)). See A111293
Pi*(1+sqrt(2))/8. See A196522
Pi*(10^761) - floor(Pi*(10^761)). See A277535
Pi*(2/3)^(1/2). See A239049
Pi*(3 - gamma)/32, where gamma is Euler's constant A001620. See A215722
Pi*(Pi^2*zeta(3)+6*zeta(5))/8. See A194655
Pi*6^(1/2)/3. See A239049
Pi*cos(phi) - Pi/2, where phi is the constant defined by A191102. See A192930
Pi*e. See A019609
Pi*e/11. See A019619
Pi*e/12. See A019620
Pi*e/13. See A019621
Pi*e/14. See A019622
Pi*e/16. See A019624
Pi*e/17. See A019625
Pi*e/18. See A019626
Pi*e/19. See A019627
Pi*e/2. See A019610
Pi*e/21. See A019629
Pi*e/22. See A019630
Pi*e/23. See A019631
Pi*e/24. See A019632
Pi*e/3. See A019611
Pi*e/4. See A019612
Pi*e/6. See A019614
Pi*e/7. See A019615
Pi*e/8. See A019616
Pi*e/9. See A019617
Pi*exp(-Pi^2/2). See A040009
Pi*exp(2*Pi-Pi^2/2). See A037996
Pi*e^2. See A037222
Pi*log(2). See A086054
Pi*log(2)/2. See A173623
Pi*sqrt(3)/16. See A247446
Pi*sqrt(3)/8. See A268508
Pi*zeta(3)/4. See A193712
pi+sqrt(-1+pi^2). See A189089
Pi-333/106. See A226042
Pi-sqrt(2). See A177437
pi/(1+2pi). See A197700
pi/(1+4pi). See A197701
pi/(1+pi). See A197726
Pi/(12*sqrt(3)). See A244977
Pi/(2*Log(Pi)). See A182502
Pi/(2*phi^2). See A180014
Pi/(2*sqrt(2)). See A093954
Pi/(2*sqrt(3)). See A093766
Pi/(2*sqrt(5)). See A244979
Pi/(2*sqrt(6)). See A244980
pi/(2+2*pi). See A197682
Pi/(2+2*sqrt(2)). See A193355
Pi/(2+4*Pi). See A197683
pi/(2+pi). See A197686
Pi/(2+sqrt(2)) See A193373
Pi/(2e). See A086056
Pi/(3*sqrt(2)). See A093825
Pi/(4*log(2)). See A275408
pi/(4+2pi). See A197690
pi/(4+4pi). See A197691
pi/(4+pi). See A197694
Pi/(4e) + e/(3Pi). See A225155
pi/(6+2*pi). See A197695
pi/(6+4*pi). See A197696
pi/(6+pi). See A197699
Pi/(8*sqrt(2)). See A244976
Pi/11. See A019678
Pi/12. See A019679
Pi/13. See A019680
Pi/14. See A019681
Pi/16. See A019683
Pi/17. See A019684
Pi/180. See A019685
Pi/19. See A019686
Pi/2 + 2/Pi. See A086118
Pi/2*(Pi^2/12 + (log(2))^2). See A196877
Pi/2. See A019669
Pi/21. See A019688
Pi/22. See A019689
Pi/23. See A019690
Pi/24. See A019691
Pi/28. See A132744
Pi/3. See A019670
Pi/30 ~ 0.104719... which is the average arithmetic area <S_0> of the 0-winding sectors enclosed by a closed Brownian planar path, of a given length t, according to Desbois, p.1. See A019670
Pi/31. See A132700
Pi/32. See A244978
Pi/4 + log(2)/2. See A231902
Pi/4-log(2)/2. See A196521
Pi/4. See A003881
Pi/6. See A019673
Pi/7. See A019674
Pi/8 - log(2)/2. See A164833
Pi/8*(6*zeta(3)+Pi^2*log(2)+4*log(2)^3). See A196878
Pi/8. See A019675
Pi/9. See A019676
Pi/e + e/Pi. See A113400
Pi/e. See A061382
Pi/K, where K is the Landau-Ramanujan constant. See A276834
Pi/LambertW(Pi). See A088928
Pi/log(10). See A197071
Pi/P, where P is the Universal parabolic constant (A103710). See A232717
Pi/phi, where phi = (1+sqrt(5))/2. See A094881
Pi/sinh(Pi). See A090986
Pi/sqrt(27). See A073010
Pi/sqrt(3) = sqrt(2*zeta(2)). See A093602
piriform curve length. See A201424
pi^(-1/3). See A093204
pi^(-1/4). See A093205
pi^(-1/5). See A093206
pi^(-1/6). See A093207
pi^(-1/7). See A093208
pi^(-1/8). See A093209
pi^(-2e). See A092172
pi^(-3). See A092743
pi^(-5). See A092745
pi^(-6). See A092746
pi^(-7). See A092747
pi^(-8). See A092748
pi^(-e). See A092171
pi^(1/2)+e^(1/2). See A096392
pi^(1/2)-e^(1/2). See A096389
Pi^(1/3) - e^(1/3). See A096391
pi^(1/3)+e^(1/3). See A096417
Pi^(1/4). See A092040
Pi^(1/4)/Gamma(3/4). See A175573
pi^(1/5). See A093200
pi^(1/6). See A093201
pi^(1/7). See A093202
pi^(1/8). See A093203
Pi^(1/e). See A205294
Pi^(1/gamma), where gamma is the Euler-Mascheroni constant. See A182548
Pi^(1/phi), where phi is the golden ratio. See A182550
Pi^(1/Pi). See A073238
pi^(2e). See A092173
Pi^(3/2). See A175476
Pi^(3e). See A092174
Pi^(e - Pi). See A094774
pi^(e+pi). See A094770
Pi^(e/Pi). See A205527
pi^(pi-e). See A094775
Pi^(Pi/e). See A205528
Pi^(Pi^Pi). See A073234
Pi^12/12!, the absolute density of the Leech lattice. See A260646
Pi^163. See A105144
Pi^2 + 8*K, where K is Catalan's constant. See A282823
Pi^2 - 8*K, where K is Catalan's constant. See A282824
Pi^2 / 27. See A291050
Pi^2(2-sqrt(2))/32. See A091474
Pi^2*(Pi/2 - 1). See A114598
Pi^2*log(2)/8 - 7*zeta(3)/16, where zeta is the Riemann zeta function. See A173624
Pi^2+6*Pi+1. See A230480
Pi^2. See A002388
Pi^2/(12*e^3). See A100074
Pi^2/(12*log(2)), inverse of Levy's constant. See A100199
Pi^2/(12*log(2)*log(10)), a constant appearing in several contexts, namely, Khintchine-Lévy Constants, Gauss-Kuzmin distribution and Pell's equation. See A240995
Pi^2/(16*K^2*G) = Product_(p prime congruent to 3 modulo 4) (1 + 1/p^2), where K is the Landau-Ramanujan constant and G Catalan's constant. See A243381
Pi^2/(6*log(Phi)) where Phi=(1+sqrt(5))/2. See A174607
Pi^2/11. See A195057
Pi^2/12. See A072691
Pi^2/13. See A195059
Pi^2/15. See A182448
Pi^2/18. See A086463
Pi^2/24. See A222171
Pi^2/3. See A195055
Pi^2/32. See A244854
Pi^2/4. See A091476
Pi^2/5 = 1.973920..., with offset 1. See A164102
Pi^2/6 - Sum_{k>=1} 1/prime(k)^2. See A275647
Pi^2/6/log2. See A174606
Pi^2/7. See A195056
Pi^2/8. See A111003
Pi^2/9. See A100044
Pi^2/sqrt(e). See A217249
Pi^3*log(2)/24 - 3*Pi*zeta(3)/16. See A193716
Pi^3. See A091925
Pi^3/6. See A164105
Pi^3/8. See A225016
Pi^4*log(2)/64 - 9*Pi^2*zeta(3)/64 + 93*zeta(5)/128. See A193717
Pi^4. See A092425
Pi^4/120. See A197110
Pi^4/15. See A231535
Pi^4/24. See A164108
Pi^4/3. See A164109
Pi^4/36 = zeta(2)^2. See A098198
Pi^4/45. See A257134
Pi^4/72. See A152649
pi^5. See A092731
Pi^6. See A092732
Pi^6/945. See A013664
Pi^7. See A092735
Pi^8. See A092736
Pi^8/9450. See A013666
Pi^e. See A059850
Pi^gamma, where gamma is the Euler-Mascheroni constant. See A182547
Pi^phi, where phi is the golden ratio. See A182549
Pi^Pi. See A073233
Pi^Pi^Pi^Pi. See A202955
Pi_3, the analog of Pi for generalized trigonometric functions of order p=3. See A275486
Planck angular frequency in Hertz with six proved digits: 1.85492×10^43 Hz. See A235995
Planck area in square meters. See A246505
Planck charge in coulombs. See A246504
Planck constant (Joule * second). See A003676
Planck energy in Joules. See A255896
Planck force: F_P = c^4/G, in SI units. See A228817
Planck length. See A078300
Planck mass. See A078301
Planck time (in seconds). See A078302
Plouffe sum S(1,1) = Sum_{n >= 0} 1/(n*(exp(Pi*n)-1)). See A255695
Plouffe sum S(1,2) = Sum_{n >= 0} 1/(n*(exp(2*Pi*n)-1)). See A255696
Plouffe sum S(1,4) = Sum_{n >= 0} 1/(n*(exp(4*Pi*n)-1)). See A255697
Plouffe sum S(3,1) = Sum_{n >= 0} 1/(n^3*(exp(Pi*n)-1)). See A255698
Plouffe sum S(3,2) = Sum_{n >= 0} 1/(n^3*(exp(2*Pi*n)-1)). See A255699
Plouffe sum S(3,4) = Sum_{n >= 0} 1/(n^3*(exp(4*Pi*n)-1)). See A255700
Plouffe sum S(5,1) = sum_{n >= 0} 1/(n^5*(exp(Pi*n)-1)). See A255701
Plouffe sum S(5,2) = Sum_{n >= 0} 1/(n^5*(exp(2*Pi*n)-1)). See A255702
Plouffe sum S(5,4) = Sum_{n >= 0} 1/(n^5*(exp(4*Pi*n)-1)). See A255703
Plouffe's b-constant. See A086202
Pogson's ratio 100^(1/5). See A189824
polar angle of the cone circumscribed to a regular dodecahedron from one of its vertices. See A243445
polar angle, in degrees, of a cone which makes a golden-ratio cut of the full solid angle. See A238239
polar angle, in radians, of a cone which makes a golden-ratio cut of the full solid angle. See A238238
Porter's Constant. See A086237
position of a minimum of Arias de Reyna and van de Lune's kappa function. See A225961
position of the local maximum of the Barnes G function in the interval [0,2]. See A245081
position of the local minimum of the Barnes G function in the interval [2,4]. See A245083
position of the maximum of the function f(x) = x*Sum_{n>=1}n^2*(2*n^2*x^2-3)*exp(-n^2*x^2). See A265179
position of the positive real maximum of Dawson's integral D_+(x). See A133841
position of the real positive inflection point of Dawson's integral D_+(x). See A133843
position of the unique local minimum of the Riemann-Siegel theta function. See A114866
positive constant C such that 1 = Sum_{k>=1} 1/C^(2^k). See A211878
positive number c for which the curve y=c/x is tangent to the curve y=sin(x), and 0 < x < 2*Pi. See A196765
positive number x satisfying e^x=2*cos(x). See A196396
positive number x satisfying e^x=3*cos(x). See A196397
positive number x satisfying e^x=4*cos(x). See A196398
positive number x satisfying e^x=5*cos(x). See A196399
positive number x satisfying e^x=6*cos(x). See A196400
positive real number x such that Dedekind eta(sqrt(-1)*x) = x. See A096152
positive real number x such that Dedekind eta(sqrt(-1)*x) is maximized. See A097078
positive real root of 3*x^4 - x^3 - x^2 - 2, a constant related to quasi-isometric mappings. See A242721
positive real root of x^6 - x^5 - x^4 + x^2 - 1. See A293508
positive real solution of the equation x^(k+1)+x^k-1=0. Case k=10. See A230158
positive real solution of the equation x^(k+1)+x^k-1=0. Case k=3. See A230151
positive real solution of the equation x^(k+1)+x^k-1=0. Case k=4. See A230152
positive real solution of the equation x^(k+1)+x^k-1=0. Case k=5. See A230153
positive real solution of the equation x^(k+1)+x^k-1=0. Case k=6. See A230154
positive real solution of the equation x^(k+1)+x^k-1=0. Case k=7. See A230155
positive real solution of the equation x^(k+1)+x^k-1=0. Case k=8. See A230156
positive real solution of the equation x^(k+1)+x^k-1=0. Case k=9. See A230157
positive real solution of the equation x^k-x-1=0. Case k=10. See A230163
positive real solution of the equation x^k-x-1=0. Case k=6. See A230159
positive real solution of the equation x^k-x-1=0. Case k=7. See A230160
positive real solution of the equation x^k-x-1=0. Case k=8. See A230161
positive real solution of the equation x^k-x-1=0. Case k=9. See A230162
positive root of x^sinh(x) = sinh(x)^x. See A215481
positive root of (x+1)^n - x^(2n). (x+1)^n - x^2n = 0 has only two real roots x1 = -(sqrt(5)-1)/2 and x2 = (sqrt(5)+1)/2 for all n>0. See A001622
positive root of log(x + 1) = sin(x). See A126599
positive root of the equation 13x^4 - 7x^2 - 581 = 0. See A156816
positive root of x^(x^x) = e. See A264808
positive root of x^(x^x) = gamma. See A264936
positive root of x^(x^x) = Pi. See A264807
positive root of x^2 = cos(x). See A125578
positive root of x^3 = cos(x). See A125579
positive root of x^3 = sin(x). See A125580
positive root of x^4 - x^3 - 1 = 0. See A086106
positive root of x^x^x = 2. See A199550
positive root of x^x^x^x = 2. See A225134
positive solution of erf(x) = x. See A260632
positive solution of G(x)=x, with x>1, G being the Barnes function. See A245078
positive solution to 5*(1-exp(u)) + u*exp(u) = 0. See A094090
positive solution to log(x)/x == -3*Pi/2. See A241517
positive solution to the equation chi_2(r) = 0, where chi_2(r) is solution to the Lane-Emden pressure equation of index 2. See A254037
positive solution to the equation x/(1-x) = 1+log(1/(1-x)), an auxiliary constant associated with the problem of enumeration of trees by inversions. See A242769
positive solution to x = 2*(1-exp(-x)). See A256500
positive solution to x = 3*(1-exp(-x)). See A194567
positive solution to x = 4*(1-exp(-x)). See A256501
positive solution x to Sum_{k>=1} 1/(k^2 + x) = 1. See A259173
positive solutions x of the quadratic equation x^2 + mx - 2 = 0, m = 1, 2... x = (sqrt(m^2+8)-2)/2 m=1, 2.. See A085579
positive value of r that maximizes the expression (1 + r + r^2)*(1 + r - r^2)*(1 - r + r^2)*(-1 + r + r^2). See A181828
positive x satisfying x^(x^x) = LambertW(1). See A265131
power tower of 1/(2*Pi): the real solution to (2*Pi)^x*x = 1. See A276635
power tower of 1/sqrt(3): the real solution to 3^(x/2)*x = 1. See A266092
power tower of Euler constant gamma. See A231095
power tower of the inverse of golden ratio. See A231096
power tower of the ratio E/Pi. See A231097
power tower of the ratio Pi/E. See A231098
prime analog of the Kepler-Bouwkamp constant: Product_{k>=2} cos(Pi/prime(k)). See A131671
prime gap constant (concatenate the sizes of prime gaps, A001223). See A255311
prime triplets constant, also known as Brun's constant B_{3a} = Sum (1/p + 1/(p+2) + 1/(p+6)) as p runs through the initial members of prime triplets A022004. See A277774
prime triplets constant, also known as Brun's constant B_{3b} = Sum (1/p + 1/(p+4) + 1/(p+6)) as p runs through the initial members of prime triplets A022005. See A277775
prime version of Ramanujan's infinite nested radical. See A239349
prime zeta function at 2: Sum_{p prime>=2} 1/p^2. See A085548
prime zeta function at 3. See A085541
prime zeta function at 4. See A085964
prime zeta function at 5. See A085965
prime zeta function at 6. See A085966
prime zeta function at 7. See A085967
prime zeta function at 8. See A085968
prime zeta function at 9. See A085969
Primitive numbers whose decimal expansion of 1/n is equidistributed in base 10. See A073761
probability of a normal-error variable exceeding the mean by more than five standard deviations. See A239386
probability of a normal-error variable exceeding the mean by more than four standard deviations. See A239385
probability of a normal-error variable exceeding the mean by more than one standard deviation. See A239382
probability of a normal-error variable exceeding the mean by more than six standard deviations. See A239387
probability of a normal-error variable exceeding the mean by more than three standard deviations. See A239384
probability of a normal-error variable exceeding the mean by more than two standard deviations. See A239383
probability of a weakly carefree couple. See A118261
probability of rolling a Yahtzee (5 of a kind) in the dice game Yahtzee (tm). See A096256
probability that a point of an infinite (rooted) tree is fixed by every automorphism of the tree. See A051496
probability that a random real number is evil. See A271880
probability that a random walk on a 3-D lattice returns to the origin. See A086230
probability that a random walk on a 4-d lattice returns to the origin. See A086232
probability that a random walk on a 5-d lattice returns to the origin. See A086233
probability that a random walk on a 6-d lattice returns to the origin. See A086234
probability that a random walk on a 7-d lattice returns to the origin. See A086235
probability that a random walk on an 8-d lattice returns to the origin. See A086236
probability that an integer tuple (x,y,z,w) satisfies gcd(x,y)=gcd(y,z)=gcd(z,w)=gcd(w,x)=1. See A256392
probability that three positive integers are pairwise not coprime. See A273093
probability that two m X m and n X n matrices (m,n large) have relatively prime determinants. See A085849
probable error. See A092678
prod(k>=0,1-1/(2^k+1)). See A083864
product 1/(1 - 1/A000668(n)^2), n= 1 to infinity. See A176426
product of 1 - 1/2^2^n over all n >= 0. See A215016
product of 1 - 4^-p over all primes p. See A293258
product of Newtonian constant of gravitation and Planck force. See A183001
product( p == 3 (mod 4), sqrt(1-p^-2)). See A079059
product(1 + 1/(p*(p^2-1))), p prime >= 2). See A065487
product(1 + 1/(p+1)^2), p prime >= 2). See A065486
product(1 + 1/(p^2+p-1)), p prime >= 2). See A065489
product(1 + 1/(p^2-p-1)), p prime >= 2). See A065488
product(1 + p/((p-1)^2*(p+1))), p prime >= 2). See A065484
product(1 - (2p-1)/p^3), p prime >= 2). See A065464
product(1 - (p+2)/p^3), p prime >= 3). See A065476
product(1 - 1/(p*(p^2-1))), p prime >= 2). See A065470
product(1 - 1/(p+1)^2), p prime >= 2). See A065472
Product(1 - 1/(p+1)^3), p prime >= 2). See A116393
product(1 - 1/(p^2*(p+1))), p prime >= 2). See A065465
product(1 - 1/(p^2*(p^2-1))), p prime >= 2). See A065471
product(1 - 1/(p^2+p-1)), p prime >= 2). See A065480
product(1 - 1/(p^2-1)), p prime >= 2). See A065469
product(1 - 1/(p^2-2)), p prime >= 2). See A065481
product(1 - 1/(p^2-p-1)), p prime >= 3). See A065479
product(1 - 1/(p^3*(p+1))), p prime >= 2). See A065466
product(1 - 1/(p^4*(p+1))), p prime >= 2). See A065467
product(1 - 1/(p^5*(p+1))), p prime >= 2). See A065468
product(1 - p/(p^3-1)), p prime >= 2). See A065478
product(1-1/(4n+1)^2, n>=1). See A224268
product(1-1/(p^4-p^3), p=prime). See A065415
product(1-1/(p^5-p^4), p prime). See A065416
product(1-4/p^2+4/p^3-1/p^4), p prime>=2). See A256392
Product_p p#/(p#-1). See A161360
Product_{i>=1} (1-1/prime(i))/(1-1/sqrt(prime(i)*prime(i+1))). See A267251
Product_{j>=1} (1 - exp(-j)). See A292902
product_{k >= 0} 1+1/(2^(2^k)+1). See A249119
Product_{k >= 1} (1 + 1/prime(k)^6). See A269404
Product_{k >= 1} (1 - 1/2^k). See A048651
Product_{k >= 1} (k*(k+1))^(-1/(k*(k+1)), a constant related to the alternating Lüroth representations of real numbers. See A272286
Product_{k>0} (1 - 1/8^k). See A132036
Product_{k>0} (1-1/10^k). See A132038
Product_{k>0} (1-1/11^k). See A132267
Product_{k>0} (1-1/12^k). See A132268
Product_{k>0} (1-1/6^k). See A132034
Product_{k>0} (1-1/7^k). See A132035
Product_{k>0} (1-1/9^k). See A132037
Product_{k>=0} (1 + 1/2^(2k))^(-1/2). See A273413
Product_{k>=0} (1 + 1/2^k). See A081845
Product_{k>=0} (1 - 1/(2*10^k)). See A132026
Product_{k>=0} (1 - 1/(2*11^k)). See A132265
Product_{k>=0} (1 - 1/(2*12^k)). See A132266
Product_{k>=0} (1 - 1/(2*6^k)). See A132022
Product_{k>=0} (1+1/10^k). See A132325
Product_{k>=0} (1+1/3^k). See A132323
Product_{k>=1} ((1 + sinh(1/k)) / exp(1/k)). See A270614
Product_{k>=1} (1 + 1/2^k) = 2.384231029031371... See A079555
Product_{k>=1} (1 + exp(-2*Pi*(2*k-1))). See A292829
Product_{k>=1} (1 + exp(-2*Pi*k)). See A292821
Product_{k>=1} (1 + exp(-3*Pi*k)). See A292887
Product_{k>=1} (1 + exp(-4*Pi*k)). See A292822
Product_{k>=1} (1 + exp(-5*Pi*k)). See A292904
Product_{k>=1} (1 + exp(-Pi*(2*k-1))). See A292828
Product_{k>=1} (1 + exp(-Pi*(2*k-1)/2)). See A292827
Product_{k>=1} (1 + exp(-Pi*k)). See A292820
Product_{k>=1} (1 + exp(-Pi*k/2)). See A292819
Product_{k>=1} (1 - exp(-16*Pi*k)). See A292864
Product_{k>=1} (1 - exp(-2*Pi*(2*k-1))). See A292825
Product_{k>=1} (1 - exp(-3*Pi*k)). See A292888
Product_{k>=1} (1 - exp(-4*Pi*(2*k-1))). See A292826
Product_{k>=1} (1 - exp(-5*Pi*k)). See A292905
Product_{k>=1} (1 - exp(-Pi*(2*k-1))). See A292824
Product_{k>=1} (1 - exp(-Pi*(2*k-1)/2)). See A292823
Product_{k>=1} (1 - exp(-Pi*k/4)). See A292863
Product_{k>=1} (1 - exp(-Pi*k/8)). See A292862
Product_{k>=1} (1+1/10^k). See A132326
Product_{k>=1} (1+1/3^k). See A132324
Product_{k>=1} (1-1/3^k). See A100220
Product_{k>=1} (1-1/4^k). See A100221
Product_{k>=1} (1-1/5^k). See A100222
Product_{k>=1} sinc(2Pi/(2k+1)). See A118253
Product_{k>=2} 1/(1-1/k!). See A247551
Product_{n >= 1} cos(1/n). See A118817
Product_{n >= 2} 1-n^(-3). See A109219
product_{n=1..infinity} (1-1/(4n)^2). See A112628
product_{n=2..infinity} (n^10-1)/(n^10+1). See A144669
product_{n=2..infinity} (n^4-1)/(n^4+1). See A144663
product_{n=2..infinity} (n^6-1)/(n^6+1). See A144665
product_{n=2..infinity} (n^7-1)/(n^7+1). See A144666
product_{n=2..infinity} (n^8-1)/(n^8+1). See A144667
product_{n=2..infinity} (n^9-1)/(n^9+1). See A144668
Product_{n=3..infinity} Cosh(Pi/n). See A230821
Product_{n>1} (1+1/n)^(1/n). See A242623
Product_{n>1} (1-1/n)^(1/n). See A242624
Product_{n>1} (1-1/n^2)^(1/n). See A244625
Product_{n>=0} (1+1/n!). See A238695
product_{n>=1} (1 - 1/(3n)^2). See A086089
Product_{n>=1} (1+1/n^3). See A073017
Product_{n>=1} (1+1/n^4). See A258870
Product_{n>=1} (1+1/n^6). See A258871
Product_{n>=1} (1-1/(4n-1)^2)). See A096427
Product_{n>=1} (1/e * (1/(3*n)+1)^(3*n+1/2)). See A100072
Product_{n>=1} (2n/(2n+1))^((-1)^t(n)), where t(n) = A010060(n) is the Thue-Morse sequence. See A086744
product_{n>=1} (2n/(2n+1))^((-1)^t(n-1)), a probabilistic counting constant, where t(n) = A010060(n) is the Thue-Morse sequence. See A248582
product_{n>=1} (n/(n+1))^((-1)^t(n)), a probabilistic counting constant, where t(n) = A010060(n) is the Thue-Morse sequence. See A248342
product_{n>=1} (n/(n+1))^((-1)^t(n-1)), a probabilistic counting constant, where t(n) = A010060(n) is the Thue-Morse sequence. See A248581
Product_{n>=1} cosh(1/n). See A249673
Product_{n>=1} n! /(sqrt(2*Pi*n) * (n/e)^n * (1+1/n)^(1/12)). See A213080
Product_{n>=2} (1 - 1/(n*(n-1))). See A146481
Product_{n>=2} (1 - 1/(n^2*(n-1))). See A146485
Product_{n>=2} (1 - 1/(n^3*(n-1))). See A146489
Product_{n>=2} (1 - 1/(n^4*(n-1))). See A146492
Product_{n>=2} (1-1/n!). See A282529
product_{n>=2} (1-n^(-5)). See A175616
product_{n>=2} (1-n^(-6)). See A175617
product_{n>=2} (1-n^(-7)). See A175618
product_{n>=2} (1-n^(-8)). See A175619
Product_{n>=2} (n^5-1)/(n^5+1). See A144664
Product_{p = prime} (1 +(3*p^2-1)/((p^2-1)*p*(p+1)) ). See A175640
product_{p = prime} (1-3/p^3+2/p^4+1/p^5-1/p^6). See A175639
Product_{p odd prime} 1-2/(p*(p-1)), a constant related to Artin's conjecture in the context of quadratic fields. See A271780
Product_{p prime > 2} 1-1/(p^2-3p+3), a constant related to I. M. Vinogradov's proof of the "ternary" Goldbach conjecture. See A264736
Product_{p prime} (1 - 1/(p*(p+1))). See A065463
Product_{p prime} (1+1/(2p))*sqrt(1-1/p), a constant related to the asymptotic average number of squares modulo n. See A271547
Product_{p prime} (1+1/p)^(1/p), an infinite product considered and computed by Marc Deléglise. See A272028
Product_{p prime} (1+1/p/(p-1)) = zeta(2)*zeta(3)/zeta(6) = 1.94359643682075920505707... See A082695
Product_{p prime} (1-(p^2+2)/(2(p^2+1)(p+1))) sqrt(1-1/p), a constant related to the asymptotic average number of squares modulo n. See A269472
product_{p=primes} (1+1/2^p). See A184083
product_{p=primes} (1-1/(2^p+1)). See A184084
product_{p=primes} (1-1/(2^p-1)). See A184085
product_{p=primes} (1-1/2^p). See A184082
product_{primes ==1 mod 3} 1/(1-1/p^2). See A175646
product_{primes ==1 mod 4} 1/(1-1/p^2). See A175647
product_{primes p == 1 (mod 8)} p*(p-8)/(p-4)^2. See A210630
Product_{primes p} ((p-1)/p)^(1/p)). See A124175
product_{primes p} (1-1/p)^(-2)*(1-(2+A102283(p))/p). See A188596
Product_{q in A001358} (1-1/(q*(q-1))). See A146482
Product_{q in A001358} (1-1/(q^2*(q-1))). See A146486
Product_{q in A001358} (1-1/(q^3*(q-1))). See A146490
Product_{q in A001358} (1-1/(q^4*(q-1))). See A146493
Product_{q in A014612} (1-1/(q*(q-1))). See A146483
Product_{q in A014612} (1-1/(q^2*(q-1))). See A146487
Product_{q in A014612} (1-1/(q^3*(q-1))). See A146491
Product_{q in A014612} (1-1/(q^4*(q-1))). See A146494
Product_{q in A014613} (1-1/(q*(q-1))). See A146484
Product_{q in A014613} (1-1/(q^2*(q-1))). See A146488
product_{q=3-almost-primes} (q^2-1)/(q^2+1). See A155799
Product{k=0..inf} (1+1/2^(2k))^(1/2). See A065445
Product{k=1..inf} (1-1/2^k)^(-1). See A065446
Product{k>0, 1-1/(2*8^k)}. See A132024
Product{k>=0, 1-1/(2*3^k)}. See A132019
product{k>=0, 1-1/(2*4^k)}. See A132020
Product{k>=0, 1-1/(2*5^k)}. See A132021
Product{k>=0, 1-1/(2*7^k)}. See A132023
Product{k>=0, 1-1/(2*9^k)}. See A132025
prod_{k>=1} (1+1/k^2). See A156648
Prod_{p prime} (1 - 3/p^2). See A206256
proposed value for Avogadro's number, namely 602214141070409084099072 = 84446888^3. See A129106
proton Compton wavelength in meters. See A230845
proton mass (in kilograms). See A070059
proton mass (mass units). See A003677
proton mass energy equivalent in Joules. See A230438
proton mass energy equivalent in MeV. See A284832
proton-to-electron mass ratio. See A005601
psi(-1/2). See A248176
Psi(log(2)), negated. See A269559
Psi(Pi). See A269547
psi, the unique solution on (0,Pi) of sin(psi)-psi*cos(psi) = Pi/2, an auxiliary constant used in the Hall-Tenenbaum inequality applied to real multiplicative functions. See A173201
Purdom-Williams constant, a constant related to the Golomb-Dickman constant and to the asymptotic evaluation of the expectation of a random function longest cycle length. See A244067
Pythagorean comma. See A221363
P^24 where P = plastic constant (A060006). See A116397
P_0(xi), the maximum limiting probability that a random n-permutation has no cycle exceeding a given length. See A248080
p_0, a constant associated with the Khintchine inequality in case of random variables with Rademacher distribution. See A249415
P_2(xi), the maximum limiting probability that a random n-permutation has exactly two cycles exceeding a given length. See A248791
p_2, a probability associated with continuant polynomials. See A247318
p_3 (so named by S. Finch), a probability related to Vallée's constant. See A272182
p_4(1), a particular radial probability density of a 4-step uniform random walk. See A244995
p_4(2), the maximum radial probability density of a 4-step uniform random walk. See A244994
Pálfy's constant c_3 = 5/3 + log_9(32). See A243407
q between 0 and 1 maximizing Dedekind eta function eta(q) = q^(1/24) * prod(n>=1, 1 - q^n). See A211342
Q(0), value of one of five integrals related to Quantum Field Theory (see the paper by David Broadhurst). See A274438
Q(1), value of one of five integrals related to Quantum Field Theory (see the paper by David Broadhurst). See A274439
Q(2), value of one of five integrals related to Quantum Field Theory (see the paper by David Broadhurst). See A274440
Q(3), value of one of five integrals related to Quantum Field Theory (see the paper by David Broadhurst). See A274441
Q(4), value of one of five integrals related to Quantum Field Theory (see the paper by David Broadhurst). See A274442
QRS constant. See A131329
quadratic mean of 1 and Pi. See A272873
quadratic recurrence constant sqrt(1 * sqrt(2 * sqrt(3 * sqrt(4 * ...)))). See A112302
Quet's constant, the self-generating continued fraction with first term 1. See A229779
Q_5 = zeta(5) / (Sum_{k>=1} (-1)^(k+1) / (k^5 * binomial(2k, k))), a conjecturally irrational constant defined by an Apéry-like formula. See A262177

### Start of section R

r = 0.527697..., a boundary ratio separating catenoid and Goldschmidt solutions in the minimal surface of revolution problem. See A253545
r = Sum_{n >= 0} (floor(n/2)!)^2/n!. See A248682
r = sum_{n >= 0} floor(2n/3)!/n!. See A248678
r = sum_{n >= 0} floor(3n/2)!/(2n)!. See A248679
r = sum_{n >= 0} floor(n/2)!/n!. See A248675
r = sum_{n >= 0} floor(n/3)!/n!. See A248676
r = sum_{n >= 0} floor(n/4)!/n!. See A248677
r = sum{(floor(n/3)!)^3/n!, n >= 0. See A248683
r = sum{(floor(n/4)!)^4/n!, n >= 0. See A248684
r = sum{(floor(n/5)!)^5/n!, n >= 0}. See A248685
r = sum{floor(n/4)!/floor(n/3)!, n >= 0. See A248681
r = sum{[n/3]!/[n/2]!, n = 0..infinity} and [ ] = floor. See A248680
R/F, where R is the molar gas constant and F is Faraday's constant. See A275008
rabbit constant. See A014565
radius of convergence of g.f. for unlabeled trees (A000055). See A212809
radius of convergence of the g.f. of A106336; equals constant A106333 divided by constant A106334. See A106335
radius of convergence of the generating function for the enumeration of rooted identity trees (A004111). See A275149
radius of convergence of the generating function of A000598, the number of rooted ternary trees of n vertices. See A261340
radius of convergence of the generating function of A000625 (alcohol stereoisomers enumeration). See A272192
radius of convergence of Wedderburn-Etherington numbers g.f. See A240943
radius of inscribed sphere about a regular icosahedron with edge = 1. See A179294
radius of inscribed sphere of an icosahedron with radius of circumscribed sphere = 1. See A179292
radius of the circle tangent to the curve y=(1/2)/(1+x^2) and to the positive x and y axes. See A197024
radius of the circle tangent to the curve y=1/(1+x^2) and to the positive x and y axes. See A197023
radius of the circle tangent to the curve y=3/(1+x^2) and to the positive x and y axes. See A197025
radius of the circle tangent to the curve y=cos(2x) and to the positive x and y axes. See A197017
radius of the circle tangent to the curve y=cos(2x) at points (x,y) and (-x,y), where 0<x<1. See A197020
radius of the circle tangent to the curve y=cos(3x) and to the positive x and y axes. See A197018
radius of the circle tangent to the curve y=cos(3x) at points (x,y) and (-x,y), where 0<x<1. See A197021
radius of the circle tangent to the curve y=cos(4x) and to the positive x and y axes. See A197019
radius of the circle tangent to the curve y=cos(4x) at points (x,y) and (-x,y), where 0<x<1. See A197022
radius of the circle tangent to the curve y=cos(x) and to the positive x and y axes. See A197016
radius of the smallest circle tangent to the x axis and to the curve y=-cos(2x) at points (x,y), (-x,y). See A197027
radius of the smallest circle tangent to the x axis and to the curve y=-cos(3x) at points (x,y), (-x,y). See A197028
radius of the smallest circle tangent to the x axis and to the curve y=-cos(4x) at points (x,y), (-x,y). See A197029
radius of the smallest circle tangent to the x axis and to the curve y=-cos(x) at points (x,y), (-x,y). See A197026
radius x (in units of cube edge length) of sphere with volume x (in units of cube volume). See A137209
Ramanujan prime constant: Sum_{n>=1} (1/R_n)^2, where R_n is the n-th Ramanujan prime, A104272(n). See A190124
Ramanujan's AGM Continued Fraction R(2) = R_1(2,2). See A237841
Ramanujan's constant G(1) = Sum_{r>=1} 1/(2r^3)*(1 + 1/3 + ... + 1/(2r-1)). See A256576
rank 2 Artin constant product(1-1/(p^3-p^2), p=prime). See A065414
ratio 7129 / 6105195. See A115096
ratio between energy and mass measured in meter^2/second^2. By Einstein's formula E/m = c^2. See A182999
ratio n/(n+1) is accumulation of Catalan numbers;(5 +/- sqrt(15)). See A177187
ratio of both the surface area and the volume of an icosahedron to a dodecahedron with the same inradius. See A102209
ratio of height to width of the bounding rectangle of the national flag of Nepal, as defined in Schedule 1 of Article 5 of its Constitution. See A230582
ratio of the area of a parbelos to the area of its associated arbelos: 4/(3*Pi). See A232715
ratio of the area of the latus rectum segment of any equilateral hyperbola to the square of its semi-axis: sqrt(2) - log(1 + sqrt(2)). See A222362
ratio of the area of the triangle corresponding to a circular segment with area r^2 of a circle with radius r to r^2 itself. See A179378
ratio of the chord length of a circular segment with area r^2 of a circle with radius r to r itself. See A179375
ratio of the height of a circular segment with area r^2 of a circle with radius r to r itself. See A179376
ratio of the height of the triangle corresponding to a circular segment with area r^2 of a circle with radius r to r itself. See A179377
ratio of the length of the boundary of any arbelos to the length of the boundary of its associated parbelos: Pi / (sqrt(2) + log(1 + sqrt(2))). See A232717
ratio of the length of the boundary of any parbelos to the length of the boundary of its associated arbelos: (sqrt(2) + log(1 + sqrt(2))) / Pi. See A232716
ratio of the length of the latus rectum arc of any parabola to its focal length: sqrt(8) + log(3 + sqrt(8)). See A263151
ratio of the length of the latus rectum arc of any parabola to its latus rectum: (sqrt(2) + log(1 + sqrt(2)))/2. See A103711
ratio of the length of the latus rectum arc of any parabola to its semi latus rectum: sqrt(2) + log(1 + sqrt(2)). See A103710
ratio of the perimeter of a regular 7-gon (heptagon) to its diameter (largest diagonal). See A280533
ratio of the perimeter of a regular 8-gon (octagon) to its diameter (largest diagonal). See A280585
rational number 240781665 / 1111111111. See A172430
Re(tan(1+i)). See A170936
real constant in an explicit counterexample to the Lagarias-Wang finiteness conjecture. See A178768
real fixed point of the jinc function. See A133921
real fixed point of the tanhc function. See A133918
real inflection point of the tanhc function. See A133919
real number arising in self-avoiding and directed graphs belonging to eight-branching Cayley tree (Bethe lattice) generated by the Fucsian group of a Riemann surface of genus two. See A202151
real number quantifying the area of the Apollonian gasket of three congruent circles of radius 1. See A090551
real number whose continued fraction is defined by property that k-th partial quotient is the period length of the continued fraction for sqrt(k). See A053011
real number x between 3 and 4 where 2^x = x!. See A202475
real number x such that y = Gamma(x) is a minimum. See A030169
real number y such that y = Gamma(x) is a minimum. See A030171
real part of (-Exp[ -1])^(-Exp[ -1]). See A119420
real part of -(i^e) See A211883
real part of -i^e is in A211883. See A211884
real part of -Pi^(I*Pi). See A236098
real part of 1/i^Pi, where i=sqrt(-1). See A222128
real part of a fixed point of the logarithmic integral li(z) in C. See A276762
real part of exp(i/Pi), or cos(1/Pi). See A237185
real part of e^(i/e). See A212436
real part of e^i. See A049470
real part of i!. See A212877
real part of I^(1/7), or cos(Pi/14). See A232735
real part of I^(1/9), or cos(Pi/18). See A232737
real part of i^(e^Pi), where i = sqrt(-1). See A194555
real part of i^(i^i), that is, Re(i^(i^i)). See A116186
real part of i^Pi. See A222128
real part of li(-1). See A257819
real part of li(i), i being the imaginary unit. See A257817
real part of Li_2(I), negated. See A245058
real part of Pi^(I/Pi). See A236100
real part of Pi^i, where i=sqrt(-1). See A222130
real part of psi(i), i being the imaginary unit. See A248177
real part of solution to z = log z. See A059526
real part of sum(k>=1, e^(i*k)/k^2). See A122143
real part of Sum_{n=0..inf}(1/c_n), c_0=1, c_n=c_(n-1)*(n+I). See A231532
real part of the complex roots of x^3-x^2+1. See A210462
real part of the continued fraction i/(e + i/(e + i/(...))). See A263208
real part of the continued fraction i/(Pi+i/(Pi+i/(...))). See A263210
real part of the derivative of the Dirichlet function eta(z), at z=i, the imaginary unit. See A271525
real part of the derivative of the Riemann function zeta(z) at z=i, the imaginary unit. See A271521
real part of the dilogarithm of the square root of -1. The imaginary part is Catalan's number (A006752). See A245058
real part of the Dirichlet function eta(z), at z=i, the imaginary unit. See A271523
real part of the fixed point of -exp(z) in C congruent with the branch K=1 of log(z)+2*Pi*K*i. See A276759
real part of the fixed point of exp(z) in C congruent with the branch K=1 of log(z)+2*Pi*K*i. See A277681
real part of the infinite nested power (1+(1+(1+...)^i)^i)^i, with i being the imaginary unit. See A272875
real part of the infinite power tower of i. See A077589
real part of the limit (2N -> infinity) of Integral_{1..2N} exp(i*Pi*x)*x^(1/x) dx. See A255727
real part of the limit of f(f(...f(0)...)) where f(z)=sqrt(i+z). See A156548
real part of the root of the function x^y = y. See A277069
real part of the solution of z = (i+z)^(-i) in C (i is the imaginary unit). See A290408
real part of the solution of z = (i+z)^i in C (i is the imaginary unit). See A290409
real part of z0, the smallest nonzero first-quadrant solution of z = Sin(z). See A138282
real positive root of 48x^4 + 16x^3 - 27x^2 - 18x - 3 = 0. See A243508
real positive root of the equation: 4d^4+12d^3+8d^2-1=0. See A192938
real positive solution to eta(x)=x. See A246967
real positive solution to zeta(x)=x. See A069995
real root of 1 - x - x^3 - x^5. See A293560
real root of 2*x^3+x^2-1. See A089826
real root of 4*x^3 + 3*x - 40. See A257236
real root of a cubic used by Omar Khayyám in a geometrical problem. See A256099
real root of r^3 + r^2 + r - 1. See A192918
real root of s^3 - s^2 + s - 1/3 = 0. See A246644
real root of x^2013 - x - 1 = 0. See A232092
real root of x^3 + 2x^2 + 10x - 20. See A202300
real root of x^3 + 4*x - 13. See A257239
real root of x^3 + x - 500. See A257237
real root of x^3 + x - 6. See A257235
real root of x^3 + x^2 - 1. See A075778
real root of x^3 - 2x + 2, negated. See A273066
real root of x^3 - 3*x - 10. See A257240
real root of x^3 - 6x^2 + 4x - 2. See A262674
real root of x^3 - x - 1 (sometimes called the silver constant, or the plastic constant). See A060006
real root of x^5 - x^3 - x^2 - x - 1. See A293509
real root of x^5 - x^4 - x^2 - 1. See A293506
real root of x^7 - x^6 - x^5 + x^2 - 1. See A293557
real root of x^pi = e^x. See A105168
real root r of r^3 + r - 1 = 0. See A263719
real solution of x^3-x^2-2x-4=0. See A114431
real solution of x^3-x^2-x-4=0. See A114427
real solution of x^x = 10. See A090625
real solution to equation x^3 + 3*x = 2. See A117605
real solution x to zeta(x) - primezeta(x) = 2. See A260623
real zero x between 78 and 79 of the derivative of the function plotting the invariant points for the exponential function of the form x^y = y. See A277053
reciprocal of sum of reciprocal of product of numbers between perfect squares. See A219734
reciprocal of the constant in A274192; see Comments. See A274209
reciprocal of the constant in A274195. See A274210
reciprocal of the constant in A274198. See A274211
reciprocal of the smallest positive zero of sum_{j>0} f(j) where f(j)=[(-1)^(j+1)]*x^(2^(j+1)-2-j)/[(1-x)(1-x^3)(1-x^7)...(1-x^(2^j-1))]. See A102375
reciprocal of Wyler's constant. See A180873
reduced Champernowne constant See A189823
reduced Planck constant (in joule seconds). See A254181
reduction parameter for the biquadratic solution of the Feigenbaum-Cvitanovic equation. See A195102
related to Ramanujan's surprising formula: Prod[from n = 1 to infinity] (prime(n)^2 - 1)/ (prime(n)^2 + 1) = 2/5 and we use it in finding A112407 as the semiprime analog. We also use: A090986 = Pi csch Pi = Prod[from n = 2 to infinity] (n^2 - 1)/(n^2 + 1). See A112407
relativistic de Broglie wavelength of an electron whose velocity is equal to c/sqrt(2), where c is the speed of light in vacuum in SI units. For more information see A229962. See A230436
relativistic de Broglie wavelength of an proton whose velocity is equal to c/sqrt(2), where c is the speed of light in vacuum in SI units. For more information see A229962. See A230845
Renyi's second parking constant. See A086245
Replace 10^k with (-10)^k in decimal expansion of n. See A073835
representation of the sequence of primes by a single real in (0,1). See A051006
rho(a,b), the cross-correlation coefficient of two sides of a random Gaussian triangle (in two dimensions). See A249492
rho(a,b), the cross-correlation coefficient of two sides of a random Gaussian triangle in three dimensions. See A249523
rho_c = (5-sqrt(5))/10, the asymptotic critical density for the hard hexagon model. See A244847
Riemann zeta prime modulo function at 2 for primes of the form 4k+1. See A086032
Riemann zeta prime modulo function at 2 for primes of the form 4k+3. See A085991
Riemann zeta prime modulo function at 3 for primes of the form 4k+1. See A086033
Riemann zeta prime modulo function at 3 for primes of the form 4k+3. See A085992
Riemann zeta prime modulo function at 4 for primes of the form 4k+1. See A086034
Riemann zeta prime modulo function at 4 for primes of the form 4k+3. See A085993
Riemann zeta prime modulo function at 5 for primes of the form 4k+1. See A086035
Riemann zeta prime modulo function at 5 for primes of the form 4k+3. See A085994
Riemann zeta prime modulo function at 6 for primes of the form 4k+1. See A086036
Riemann zeta prime modulo function at 6 for primes of the form 4k+3. See A085995
Riemann zeta prime modulo function at 7 for primes of the form 4k+1. See A086037
Riemann zeta prime modulo function at 7 for primes of the form 4k+3. See A085996
Riemann zeta prime modulo function at 8 for primes of the form 4k+1. See A086038
Riemann zeta prime modulo function at 8 for primes of the form 4k+3. See A085997
Riemann zeta prime modulo function at 9 for primes of the form 4k+1. See A086039
Riemann zeta prime modulo function at 9 for primes of the form 4k+3. See A085998
right Alzer's constant x. See A254666
Rivoal-Fischler's constant (see page 11 prop.5 of the reference). See A116517
Robbins constant. See A073012
root of cos(x)^sinh(x) = sinh(x)^cos(x). See A215479
root of sinh(x)^cosh(x) = cosh(x)^sinh(x). See A215483
root of x^(e^x) = (e^x)^x. See A201130
root of x^cosh(x) = cosh(x)^x. See A215482
root of x^log(x) = log(x)^x. See A201129
root of (1/x)^(1/sqrt(x+1)) = (1/sqrt(x+1))^(1/x). See A001622
root of (2-x)^(1/(2+x)) + (3-x)^(1/(2+x)) = Pi. See A135800
root of (x+1)^sqrt(x) = sqrt(x)^(x+1). See A181778
root of 1 - Sum_{n>=} 1/x^(2^n). See A109696
root of cos(sin(x)) - x = 0. See A277077
root of cosh(x)^log(x) = log(x)^cosh(x). See A215497
root of cubic polynomial 1 - 6x + 8x^3. See A019819
root of sinh(x)^log(x) = log(x)^sinh(x). See A215496
root of tanh(x) = log(x). See A215498
root of the equation (1-r)^(2*r) = r^(2*r+1). See A237421
root of the equation (1-r)^(2*r-1) = r^(2*r). See A220359
root of the equation r*log(r/(1-r))=1. See A245260
root of the equation r^(2*r-1) = (r+1)^(2*r). See A245259
root of the equation x*cosh(x)=1. See A069814
root of x = (1+1/x)^x. See A085846
root of xtan(x)=1. See A069855
root of x^(1/sqrt(x+1)) = (1/sqrt(x+1))^x. The root of (1/x)^(1/sqrt(x+1)) = (1/sqrt(x+1))^(1/x) is the golden ratio. See A075778
root of x^(x-1) = (x-1)^x. See A169862
root x of Ei(x)=0, where Ei is the exponential integral. See A091723
Rosser's constant. See A273556
Roth number xi(3), a transcendental number based on the Fibonacci sequence. See A238301
rumor constant: decimal expansion of the number x defined by x*e^(2-2*x)=1. See A106533
R^2 where R^2 is the real root of x^3 + 2*x^2 + x - 1 = 0. See A088559
r_(5,1), a constant which is the residue at -4 of the distribution function of the distance travelled in a 5-step uniform random walk. See A247447
r_0, a universal radius associated with mapping properties of analytic functions on the unit disk and with Dirichlet's integral. See A249414
r_1, the smallest radius for which a compact packing of the plane exists, with disks of radius 1 and r_1. See A246723
r_2, the second smallest radius for which a compact packing of the plane exists, with disks of radius 1 and r_2. See A246724
r_3, the third smallest radius for which a compact packing of the plane exists, with disks of radius 1 and r_3. See A246725
r_4, the 4th smallest radius < 1 for which a compact packing of the plane exists, with disks of radius 1 and r_4. See A246726
r_5, the 5th smallest radius < 1 for which a compact packing of the plane exists, with disks of radius 1 and r_5. See A246727
r_7, the 7th smallest radius < 1 for which a compact packing of the plane exists, with disks of radius 1 and r_7. See A246728
r_8, the 8th smallest radius < 1 for which a compact packing of the plane exists, with disks of radius 1 and r_8. See A246729
r_9, the 9th smallest radius < 1 for which a compact packing of the plane exists, with disks of radius 1 and r_9. See A246730
Rényi's parking constant. See A050996

### Start of section S

s = sum_{i=1..infinity} (1/c(i))^i, where c(i) is the i-th composite number. See A120483
S(Pi), where S(x) is the series Sum_{n>=1} (-1)^(n+1)*coth(n*x)/n. See A260230
S4 = sum for 1 to infinity of fraction sequence n/P(n)^4 with P(i)= i-th prime. See A097878
Schizophrenic sequence: these are the repeating digits in the decimal expansion of sqrt(f(2n+1)), where f(m) = A014824(m). See A060011
Schwarzschild radius of the Earth (meters). See A248570
Schwarzschild radius of the Sun (meters). See A248364
sec (Pi degrees) (of course sec (Pi radians) = -1). See A073441
sec 1. See A073448
sec(phi), a constant related to the "broadworm" (or "caliper") problem. See A256367
secant of 1 degree. See A112244
secant of 15 degrees (cosecant of 75 degrees). See A120683
sech(1). See A073746
second (of 10) decimal selvage numbers; the n-th digit of a decimal selvage number, x, is equal to the tenths digit of n*x. See A071790
second Chandrasekhar's nearest neighbor constant. See A213055
second derivative of the infinite power tower function x^x^x... at x = 1/2. See A277523
second exponential integral at 1, ExpIntegralEi[1]. See A091725
second inflection point of Planck's radiation function. See A133840
second inflection point of x^(1/x). See A103476
second inflexion point of 1/Gamma(x) on the interval x=[0,infinity). See A269063
second Malmsten integral: int_{x=1..infinity} log(log(x))/(1 + x + x^2) dx, negated. See A256127
second moment of the reciprocal gamma distribution. See A273051
second negative root of the equation Gamma(x) + Psi(x) = 0, negated. See A268980
second smallest known Salem number. See A219300
second smallest negative real root of the equation Gamma(x) = -1 (negated). See A257434
second smallest positive root of tan(x) = x. See A255272
second solution of equation cos(x) cosh(x) = -1. See A076418
second solution of equation cos(x) cosh(x) = 1. See A076415
second solution to tan(x) = tanh(x). See A076421
second zero of the Bessel function J_0(z). See A280868
See A116937
Selberg-Delange constant Product_{prime p > 2} (1 + 1/(p(p-2))) See A167864
Select digits from decimal expansion of Pi corresponding to triangular number indices. See A083437
self-generating continued fraction with first term (1+sqrt(5))/2, the golden ratio. See A229922
self-generating continued fraction with first term 1/2. See A229921
self-generating continued fraction with first term 2. See A229920
self-generating continued fraction with first term sqrt(2). See A229923
self-numbers density constant. See A242403
semi-major axis (in meters) of the World Geodetic System 1984 Ellipsoid, second upgrade. See A125123
series limit of sum_{k>=1} (-1)^k*log(k)/k^2. See A210593
series limit sum_{k>=1} (-1)^(k+1) sum_{t=1..k} 1/(t^2*(k+1)^2). See A214508
series-parallel constant. See A058964
Serret's integral: Integral_(x=0)^1 log(x+1)/(x^2+1) dx. See A102886
Serves also as the decimal expansion of 1495600/33333 and as the continued fraction representation of (33397+sqrt(12952802))/1649. See A165662
seventh (of 10) decimal selvage number; the n-th digit of a decimal selvage number, x, is equal to the tenths digit of n*x. See A071874
seventh derivative of the infinite power tower function x^x^x... at x = 1/2. See A277528
seventh root of 3. See A246709
Shallit's constant. See A086276
shape (= length/width = ((4-sqrt(7))/3) of the lesser (8/3)-contraction rectangle. See A188944
shape (= length/width = ((7-sqrt(13))/6) of the lesser (7/3)-contraction rectangle. See A188942
shape (= length/width = ((9+sqrt(17))/8) of the greater (9/4)-contraction rectangle. See A189038
shape (= length/width = ((9-sqrt(17))/8) of the lesser (9/4)-contraction rectangle. See A189037
shape (= length/width = ((9-sqrt(65))/4) of the lesser (9/2)-contraction rectangle. See A188940
shape (= length/width = ((e+sqrt(-4+e^2))/2) of the greater e-contraction rectangle. See A189040
shape (= length/width = (4+sqrt(7))/3) of the greater (8/3)-contraction rectangle. See A188945
shape (= length/width = (7+sqrt(13))/6) of the greater (7/3)-contraction rectangle. See A188943
shape (= length/width = (7+sqrt(33))/4) of the greater (7/2)-contraction rectangle. See A188939
shape (= length/width = (7-sqrt(33))/4) of the lesser (7/2)-contraction rectangle. See A188938
shape (= length/width = (9+sqrt(65))/4) of the greater (9/2)-contraction rectangle. See A188941
shape (= length/width = (e-sqrt(-4+e^2))/2) of the lesser e-contraction rectangle. See A189042
shape (= length/width = (Pi+sqrt(-4+Pi^2))/2) of the greater Pi-contraction rectangle. See A189039
shape (= length/width = (Pi-sqrt(-4+Pi^2))/2) of the lesser pi-contraction rectangle. See A189044
shape (= length/width = Pi - sqrt(-1+Pi^2)) of the lesser 2*Pi-contraction rectangle. See A189088
shape (= length/width = pi+sqrt(-1+pi^2)) of the greater 2*pi-contraction rectangle. See A189089
shape of a (1/4)-extension rectangle. See A188656
shape of a (1/5)-extension rectangle; see A188640 for definitions of shape and r-extension rectangle. Briefly, shape=length/width, and an r-extension rectangle is composed of two rectangles of shape 1/r when r<1. See A188658
shape of a (2*pi)-extension rectangle; shape=pi+sqrt(1+pi^2). See A188725
shape of a (2/5)-extension rectangle; see A188640 for definitions of shape and r-extension rectangle. Briefly, shape=length/width, and an r-extension rectangle is composed of two rectangles of shape 1/r when r<1. See A188659
shape of a (3/5)-extension rectangle; see A188640 for definitions of shape and r-extension rectangle. See A188729
shape of a (4/5)-extension rectangle; see A188640 for definitions of shape and r-extension rectangle. Briefly, shape=length/width, and an r-extension rectangle is composed of two rectangles of shape 1/r when r<1. See A188730
shape of a (5/2)-extension rectangle; see A188640 for definitions of shape and r-extension rectangle. Briefly, shape=length/width, and an r-extension rectangle is composed of two rectangles of shape r. See A188731
shape of a (5/3)-extension rectangle; see A188640 for definitions of shape and r-extension rectangle. Briefly, shape=length/width, and an r-extension rectangle is composed of two rectangles of shape r. See A188732
shape of a (9/4)-extension rectangle; see A188640 for definitions of shape and r-extension rectangle. Briefly, shape=length/width, and an r-extension rectangle is composed of two rectangles of shape r. The (periodic) continued fraction of the constant is [2,1,1,1,2,2,1,1,1,2,2,1,...]. See A188733
shape of a (pi/2)-extension rectangle; shape=(1/4)(pi+sqrt(16+pi^2). See A188724
shape of a gamma-extension rectangle; see A188640 for definitions of shape and r-extension rectangle. See A224578
shape of a greater 2e-contraction rectangle; see A188738 for an introduction to lesser and greater r-contraction rectangles, their shapes, and the partitioning of these rectangles into sets of squares in a manner that matches the continued fractions of their shapes. See A188739
shape of a lesser 2e-contraction rectangle. See A188738
shape of a Pi-extension rectangle; see A188640 for definitions of shape and r-extension rectangle. Briefly, an r-extension rectangle is composed of two rectangles having shape r. See A188722
shape of an (e/2)-extension rectangle; see A188640 for definitions of shape and r-extension rectangle. Briefly, an r-extension rectangle is composed of two rectangles of shape r. See A188727
shape of an e-extension rectangle; see A188640 for definitions of shape and r-extension rectangle. Briefly, an r-extension rectangle is composed of two rectangles having shape r. See A188720
Shapiro's cyclic sum constant lambda. See A086277
Shapiro's cyclic sum constant mu. See A086278
Shepp's constant 'alpha', an optimal stopping constant associated with the case of a zero mean and unit variance distribution function. See A246671
shortest distance from the x axis through (1,1) to the line y=2x. See A197141
shortest distance from the x axis through (1,1) to the line y=3x. See A197149
shortest distance from the x axis through (2,1) to the line y=2x. See A197143
shortest distance from the x axis through (2,1) to the line y=3x. See A197151
shortest distance from the x axis through (2,1) to the line y=x. See A197033
shortest distance from the x axis through (3,1) to the line y=2x. See A197145
shortest distance from the x axis through (3,1) to the line y=x. See A197035
shortest distance from the x axis through (3,1) to the line y=x/2. See A197153
shortest distance from the x axis through (3,2) to the line y=x. See A197139
shortest distance from the x axis through (4,1) to the line y=2x. See A197147
shortest distance from the x axis through (4,1) to the line y=x. See A197137
shortest distance from the x axis through (4,1) to the line y=x/2. See A197155
shortest distance from x axis through (1,2) to y axis. See A197008
shortest distance from x axis through (1,2) to y axis. See A197012
shortest distance from x axis through (1,4) to y axis. See A197013
shortest distance from x axis through (1,e) to y axis. See A197030
shortest distance from x axis through (1,sqrt(2)) to y axis. See A197031
shortest distance from x axis through (2,3) to y axis. See A197014
shortest distance from x axis through (3,4) to y axis. See A197015
shortest length of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(3,4,5). See A195304
shortest length of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(3,4,5); i.e., decimal expansion of 2*sqrt(10)/3. See A195284
shortest length of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(3,4,5); i.e., decimal expansion of 2*sqrt(10)/3. See A195284
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(1,1,sqrt(2)). See A195433
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(1,2,sqrt(5)). See A195434
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(1,3,sqrt(10)). See A195446
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(2),sqrt(3)). See A195471
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(3),2) and angles 30,60,90. See A195475
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(r),r), where r=(1+sqrt(5))/2 (the golden ratio). See A195491
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(2,3,sqrt(13)). See A195450
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(2,sqrt(5),3). See A195479
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(5,12,13). See A195412
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(7,24,25). See A195425
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(8,15,17). See A195429
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(r-1,r,sqrt(3)), where r=(1+sqrt(5))/2 (the golden ratio). See A195495
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(sqrt(2),sqrt(3),sqrt(5)). See A195454
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(sqrt(2),sqrt(5),sqrt(7)). See A195483
shortest length, (A), of segment from side AB through centroid to side AC in right triangle ABC with sidelengths (a,b,c)=(sqrt(7),3,4). See A195487
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(1,1,sqrt(2)). See A195301
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(1,2,sqrt(5)). See A195340
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(1,3,sqrt(10)). See A195344
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(2),sqrt(3)). See A195369
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(3),2) and vertex angles of degree measure 30,60,90. See A195348
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(r),r), where r=(1+sqrt(5))/2 (the golden ratio). See A195403
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(2,3,sqrt(13)). See A195355
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(2,5,sqrt(29)). See A195359
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(2,sqrt(5),3). See A195381
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(28,45,53). See A195298
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(5,12,13). See A195286
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(7,24,25). See A195290
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(8,15,17). See A195293
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(r-1,r,sqrt(3)), where r=(1+sqrt(5))/2 (the golden ratio). See A195407
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(sqrt(2),sqrt(3),sqrt(5)). See A195365
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(sqrt(2),sqrt(5),sqrt(7)). See A195386
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(sqrt(3),sqrt(5),sqrt(8)). See A195395
shortest length, (A), of segment from side AB through incenter to side AC in right triangle ABC with sidelengths (a,b,c)=(sqrt(7),3,4). See A195399
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(1,2,sqrt(5)). See A195435
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(1,3,sqrt(10)). See A195447
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(2),sqrt(3)). See A195472
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(3),2). See A195476
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(r),r), where r=(1+sqrt(5))/2 (the golden ratio). See A195492
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(2,3,sqrt(13)). See A195451
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(2,sqrt(5),3). See A195480
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(3,4,5). See A195305
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(5,12,13). See A195413
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(7,24,25). See A195426
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(8,15,17). See A195430
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(r-1,r,sqrt(3)), where r=(1+sqrt(5))/2 (the golden ratio). See A195496
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(sqrt(2),sqrt(3),sqrt(5)). See A195455
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(sqrt(2),sqrt(5),sqrt(7)). See A195484
shortest length, (B), of segment from side BC through centroid to side BA in right triangle ABC with sidelengths (a,b,c)=(sqrt(7),3,4). See A195488
shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(1,1,sqrt(2)). See A163960
shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(1,2,sqrt(5)). See A195341
shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(1,3,sqrt(10)). See A195345
shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(2),sqrt(3)). See A195370
shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(r),r), where r=(1+sqrt(5))/2 (the golden ratio). See A195404
shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(2,3,sqrt(13)). See A195356
shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(2,5,sqrt(29)). See A195360
shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(2,sqrt(5),3). See A195383
shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(r-1,r,sqrt(3)), where r=(1+sqrt(5))/2 (the golden ratio). See A195408
shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(sqrt(2),sqrt(3),sqrt(5)). See A195366
shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(sqrt(2),sqrt(5),sqrt(7)). See A195387
shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(sqrt(3),sqrt(5),sqrt(8)). See A195396
shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(sqrt(7),3,4). See A195400
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(1,2,sqrt(5)). See A195444
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(1,3,sqrt(10)). See A195448
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(2),sqrt(3)). See A195473
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(3),2). See A195477
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(r),r), where r=(1+sqrt(5))/2 (the golden ratio). See A195493
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(2,3,sqrt(13)). See A195452
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(2,sqrt(5),3). See A195481
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(3,4,5). See A195306
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(5,12,13). See A195414
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(7,24,25). See A195427
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(8,15,17). See A195431
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(r-1,r,sqrt(3)), where r=(1+sqrt(5))/2 (the golden ratio). See A195497
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(sqrt(2),sqrt(3),sqrt(5)). See A195456
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(sqrt(2),sqrt(5),sqrt(7)). See A195485
shortest length, (C), of segment from side CA through centroid to side CB in right triangle ABC with sidelengths (a,b,c)=(sqrt(7),3,4). See A195489
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(1,2,sqrt(5)). See A195342
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(1,3,sqrt(10)). See A195346
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(2),sqrt(3)). See A195371
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(1,sqrt(r),r), where r=(1+sqrt(5))/2 (the golden ratio). See A195405
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(2,3,sqrt(13)). See A195357
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(2,5,sqrt(29)). See A195361
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(2,sqrt(5),3). See A195384
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(28,45,53). See A195299
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(5,12,13). See A195288
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(8,15,17). See A195296
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(r-1,r,sqrt(3)), where r=(1+sqrt(5))/2 (the golden ratio). See A195409
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(sqrt(2),sqrt(3),sqrt(5)). See A195367
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(sqrt(2),sqrt(5),sqrt(7)). See A195388
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(sqrt(3),sqrt(5),sqrt(8)). See A195397
shortest length, (C), of segment from side CA through incenter to side CB in right triangle ABC with sidelengths (a,b,c)=(sqrt(7),3,4). See A195401
side length (in degrees) of the spherical square whose solid angle is exactly one deg^2. See A231985
side length (in radians) of the spherical square whose solid angle is exactly one steradian. See A231987
side length median of a random triangle of unit inradius. See A261346
side of the equilateral triangle that can cover every triangle of perimeter 2. See A227472
Sierpiński introduced three constants in his 1908 doctoral thesis. The first, K, is very well known, bears his name and its decimal expansion is given in A062089. However, the second and third of these constants appear to have been largely forgotten. This sequence gives the decimal expansion of the second one, K2, and A222883 gives the decimal expansion of the third , K3. The formula given below show that K2 is related to several other, naturally occurring constants. See A222882
Sierpiński introduced three constants in his 1908 doctoral thesis. The first, K, is very well known, bears his name and its decimal expansion is given in A062089. However, the second and third of these constants appear to have been largely forgotten. This sequence gives the decimal expansion of the third one, K3, and A222882 gives the decimal expansion of the second one, K2. The formula given below show that K3 is related to several other, naturally occurring constants including K and K2. See A222883
Sierpiński's constant. See A062089
Sierpiński's S constant, which appears in a series involving the function r(n), defined as the number of representations of the positive integer n as a sum of two squares. This S constant is the usual Sierpiński K constant divided by Pi. See A241017
Sierpiński's second constant, K2 = lim_{n->infinity} ((1/n) * (Sum_{i=1..n} A004018(i^2)) - 4/Pi * log(n)). See A222882
Sierpiński's S^ (Ŝ or "S hat" as named by S. Finch), a constant appearing in the asymptotics of the number of representations of a positive integer as a sum of two squares. See A241009
Sierpiński's S~ (S "tilde" as named by S. Finch), a constant appearing in the asymptotics of the number of representations of a positive integer as a sum of two squares. See A241011
Sierpiński's third constant, K3 = lim_{n->infinity} ((1/n) * (Sum_{i=1..n} (A004018(i))^2) - 4* log(n)). See A222883
sigma(1|1,i)/2, where sigma is the Weierstrass sigma function and 1 and i are the half-periods. See A094692
sigma, a constant appearing in the asymptotic expression of the number a(n) of Carlitz compositions of size n. See A246952
sigma_3, a Turán's Power Sum Constant. See A245533
Signed-digit decimal expansion of Pi See A155481
silver mean, 1+sqrt(2). See A014176
Silverman's constant. See A093827
sin (Pi degrees). (Of course sin (Pi radians) = 0.) See A051553
sin(1). See A049469
sin(1/2). See A201504
sin(83*Pi/180). See A019892
sin(e). See A085659
sin(gamma). See A119807
sin(i)/i. See A073742
sin(log(2)). See A220085
sin(Pi/2 degrees). (Of course, sin(Pi/2 radians) = 1.) See A051558
sin(sin(1)). See A085662
sin(sin(sin(1))). See A085661
Sine Euler constant. See A249022
sine integral at 1. See A099281
sine of 1 degree. See A019810
sine of 10 degrees. See A019819
sine of 11 degrees. See A019820
sine of 12 degrees. See A019821
sine of 13 degrees. See A019822
sine of 14 degrees. See A019823
sine of 15 degrees. See A019824
sine of 16 degrees. See A019825
sine of 17 degrees. See A019826
sine of 18 degrees. See A019827
sine of 19 degrees. See A019828
sine of 2 degrees. See A019811
sine of 20 degrees. See A019829
sine of 21 degrees. See A019830
sine of 22 degrees. See A019831
sine of 23 degrees. See A019832
sine of 24 degrees. See A019833
sine of 25 degrees. See A019834
sine of 26 degrees. See A019835
sine of 27 degrees. See A019836
sine of 28 degrees. See A019837
sine of 29 degrees. See A019838
sine of 3 degrees. See A019812
sine of 31 degrees. See A019840
sine of 32 degrees. See A019841
sine of 33 degrees. See A019842
sine of 34 degrees. See A019843
sine of 35 degrees. See A019844
sine of 36 degrees. See A019845
sine of 37 degrees. See A019846
sine of 38 degrees. See A019847
sine of 39 degrees. See A019848
sine of 4 degrees. See A019813
sine of 40 degrees. See A019849
sine of 41 degrees. See A019850
sine of 42 degrees. See A019851
sine of 43 degrees. See A019852
sine of 44 degrees. See A019853
sine of 46 degrees. See A019855
sine of 47 degrees. See A019856
sine of 48 degrees. See A019857
sine of 49 degrees. See A019858
sine of 5 degrees. See A019814
sine of 50 degrees. See A019859
sine of 51 degrees. See A019860
sine of 52 degrees. See A019861
sine of 53 degrees. See A019862
sine of 54 degrees. See A019863
sine of 55 degrees. See A019864
sine of 56 degrees. See A019865
sine of 57 degrees. See A019866
sine of 58 degrees. See A019867
sine of 59 degrees. See A019868
sine of 6 degrees. See A019815
sine of 61 degrees. See A019870
sine of 62 degrees. See A019871
sine of 63 degrees. See A019872
sine of 64 degrees. See A019873
sine of 65 degrees. See A019874
sine of 66 degrees. See A019875
sine of 67 degrees. See A019876
sine of 68 degrees. See A019877
sine of 69 degrees. See A019878
sine of 7 degrees. See A019816
sine of 70 degrees. See A019879
sine of 71 degrees. See A019880
sine of 72 degrees. See A019881
sine of 73 degrees. See A019882
sine of 74 degrees. See A019883
sine of 75 degrees. See A019884
sine of 76 degrees. See A019885
sine of 77 degrees. See A019886
sine of 78 degrees. See A019887
sine of 79 degrees. See A019888
sine of 8 degrees. See A019817
sine of 80 degrees. See A019889
sine of 81 degrees. See A019890
sine of 82 degrees. See A019891
sine of 83 degrees. See A019892
sine of 84 degrees. See A019893
sine of 85 degrees. See A019894
sine of 86 degrees. See A019895
sine of 87 degrees. See A019896
sine of 88 degrees. See A019897
sine of 89 degrees. See A019898
sine of 9 degrees. See A019818
sine of the golden ratio. That is, the decimal expansion of sin((1+sqrt(5))/2). See A139345
sine of the golden ratio. That is, the decimal expansion of sin((1+sqrt(5))/2). See A139345
sinh(1)*cosh(1). See A196932
sinh(1)+cosh(1). See A001113
sinh(1). See A073742
sinh(2)/2. See A196932
sinh(Pi)/(4*Pi). See A175615
Sinh[EulerGamma]=0.6098... See A147709
site percolation threshold for the (3, 12^2) Archimedean lattice. See A174849
site percolation threshold for the (3,6,3,6) Kagome Archimedean lattice. See A178959
sixth (of 10) decimal selvage number; the n-th digit of a decimal selvage number, x, is equal to the tenths digit of n*x. See A071873
sixth derivative of the infinite power tower function x^x^x... at x = 1/2, negated. See A277527
sixth root of 3. See A246708
skewness of the Gumbel distribution. See A245719
slope (negative) of the tangent line at the point of tangency of the curves y=c*cos(x) and y=1/x, where c is given by A196610. See A196611
slope (negative) of the tangent line at the point of tangency of the curves y=cos(x) and y=(1/x)-c, where c is given by A196619. See A196620
slope of the line y=mx which meets the curve y=1+cos(x) orthogonally over the interval [0,2*pi] (as in A197000). See A197001
slope of the line y=mx which meets the curve y=cos(5x/2) orthogonally (as in A196998). See A196999
slope of the line y=mx which meets the curve y=cos(x+1) orthogonally over the interval [0,2*pi] (as in A197006). See A197009
slope of the line y=mx which meets the curve y=cos(x+1/2) orthogonally over the interval [0,2*pi] (as in A197010). See A197011
slope of the line y=mx which meets the curve y=cos(x+pi/3) orthogonally over the interval [0,2*pi] (as in A197004). See A197005
slope of the line y=mx which meets the curve y=cos(x+pi/4) orthogonally over the interval [0,2*pi] (as in A197002). See A197003
slope of the line y=mx which meets the curve y=cos(x+pi/6) orthogonally over the interval [0,2*pi] (as in A197006). See A197007
smaller of the two real fixed points of the sinhc function. See A133916
smaller of the two real solutions of the equation x^(x-1) = x+1. See A248867
smaller real zero of 10x^6 - 75x^3 - 190x + 21. See A093409
smaller solution to 3^x = x^3. See A166928
smaller solution to x^x = 3/4. See A194624
smallest disk radius for which five equal disks can cover the unit disk. See A133077
smallest negative real root of the equation Gamma(x) = -1 (negated). See A257433
Smallest number obtained by placing a + in the first n digits of decimal expansion of Pi. See A085732
smallest positive fixed point of csc(x) (and csc^-1(x)). See A133866
smallest positive fixed point of csch(x) (and csch^-1(x)). See A133867
smallest positive fixed point of sec(x). See A133868
smallest positive root of cos(Pi x/2) cosh(Pi x/2) = -1. See A068353
smallest positive root of tan(x) = x. See A115365
smallest positive root of the equation J_0(t)*I_1(t)+I_0(t)*J_1(t) = 0 (with I_0, I_1, J_0 and J_1, Bessel functions). See A242402
smallest positive root of the function lambda(x) = sum_{n=0..infinity} (-1)^n*x^n/(2^(n*(n-1)/2)*n!). See A245654
smallest positive solution to sin(x) + cos(x) + tan(x) = 0. See A259258
smallest positive solution to x^2 = tan x. See A147862
smallest positive solution to x^3 = tan x. See A147863
smallest positive solution to x^4 = tan x. See A147864
smallest positive solution to x^5 = tan x. See A147865
smallest positive solution to x^6 = tan x. See A147866
smallest positive solution to x^7 = tan x. See A147867
smallest positive solution to x^8 = tan x. See A147868
smallest root of tan(x) = log(x). See A215499
smallest solution > Pi/2 to sin(x)=sin(x^2). See A068959
smallest solution >0 to cos(x)=cos(x^2). See A068558
smallest solution >0 to sin(x)=sin(x^3). See A068960
smallest solution of Gamma(log(x)) = log(Gamma(x)). See A261999
smallest univoque Pisot Number. See A127583
smallest zeroless pandigital number in base n such that each k-digit substring (1 <= k <= n-1 = number of base-n digits) starting from the left, is divisible by k (or 0 if none exists). See A163574
Soldner's constant. See A070769
sole real negative fixed point of Sum[x^Prime[n+1],{n,0,Infinity}]. See A120219
sole real positive fixed point of Sum_{n>=0} x^Prime(n+1). See A120220
solid angle (in deg^2) of a spherical square having sides of one degree. See A231984
solid angle (in sr) of a spherical square having sides of one degree. See A231983
solid angle (in steradians) subtended by a cone having the 'magic' angle A195696 as its polar angle. See A273621
solid angle (in steradians) subtended by a spherical square of one radian side. See A231986
solid angle in steradians (sr) subtended by a cone with the polar angle of 1 radian (rad). See A243596
solid angle of an equilateral spherical triangle with a side length of 1 radian. See A243710
solution of (x-1)/(x+1) = exp(-x). See A263356
solution of agm(x,2) = 1. See A076553
solution of area bisectors problem. See A084660
solution of equation Log(2) - X/8 - exp(-3X/7) = 0 (4.251844....). See A072907
solution of equation log(2)-X*2^(-r)-exp(-X*r/(2^r-1)) = 0 for r = 4 . Solution is 9.96955802... See A072908
solution of sin(x) = x - 2. See A179373
solution of x*(log(x)-1)/(log(x)+1) = 1. See A263357
solution to (x+1)^(x+1) = x^(x+2). See A144211
solution to 127^x - 113^x = 1. This is the smallest x such that q^x - p^x = 1 for two successive primes p, q. See A038458
solution to a = cot(a/2). See A188858
solution to donkey problem. See A075838
solution to exp(-x) = x^2. See A126583
solution to exp(-x) = x^3. See A126584
solution to exp(-x) = x^4. See A126585
solution to e^x*(-1 + x) == (1 + x)/e^x. See A085984
solution to e^x=e+x, x=1.42037011802008345845842. See A104689
solution to log(x + 1) = cos(x). See A126600
solution to log(x) = cos(x). See A126598
solution to log(x) = sin(x). See A126586
solution to log_10(x) = x - 4. See A016122
solution to n/x = x-n for n = 5. See A090550
solution to n/x = x-n for n = 7. See A092290
solution to n/x = x-n for n = 9. See A090655
solution to n/x = x-n for n-3. n/x = x-n with n=1 gives the Golden Ratio = 1.6180339887... See A090458
solution to problem #1 in the Trefethen challenge. See A117231
solution to problem #10 in the Trefethen challenge. See A117240
solution to problem #2 in the Trefethen challenge. See A117232
solution to problem #3 in the Trefethen challenge. See A117233
solution to problem #4 in the Trefethen challenge (negated). See A117234
solution to problem #5 in the Trefethen challenge. See A117235
solution to problem #6 in the Trefethen challenge (negated). See A117236
solution to problem #7 in the Trefethen challenge. See A117237
solution to problem #8 in the Trefethen challenge. See A117238
solution to problem #9 in the Trefethen challenge. See A117239
solution to sin(x)-exp(-x)=0 around Pi. See A104780
solution to the equation sqrt(n)+sqrt(n+1)+sqrt(n+2)=sqrt(9n+8). See A113786
solution to the Lane-Emden equation for a sphere of polytropic index n = 2. See A248672
solution to the Lane-Emden equation for a sphere of polytropic index n = 3. See A248673
solution to the Lane-Emden equation for a sphere of polytropic index n = 4. See A248674
solution to x = sin( Pi/6 - x*sqrt(1 - x^2) ). See A192408
solution to x*10^x=1. See A103555
solution to x*11^x=1. See A103556
solution to x*12^x=1. See A103559
solution to x*13^x = 1. See A103560
solution to x*2^x = 1. See A104748
solution to x*3^x=1. See A103549
solution to x*5^x=1. See A103550
solution to x*6^x=1. See A103551
solution to x*7^x=1. See A103552
solution to x*8^x = 1. See A103553
solution to x*9^x=1. See A103554
solution to x*sqrt(1-x^2) + arcsin(x) = Pi/4, or the length of the line connecting the origin to the center of the chord of a circle, centered at 0 and of radius 1, that divides the circle such that 1/4 of the area is on one side and 3/4 is on the other side. See A086751
solution to x=Fibonacci(x);0<x<1 See A172169
solution to x^(13^x) = 13. See A103561
solution to x^(2^x)=2. See A104750
solution to x^(3^x)=3. See A104751
solution to x^(4^x)=4. See A104752
solution to x^(5^x)=5. See A104753
solution to x^(6^x)=6. See A104754
solution to x^(7^x)=7. See A104755
solution to x^(8^x)=8. See A104756
solution to x^(9^x)=9. See A104757
solution to x^2 = sin(x). See A124597
solution to x^x = 2. See A030798
solution to x^x = Phi (A001622, the Golden Ratio). See A133930
solution to y*log(y) = 1. See A030797
solution to zeta(x) = 2. See A107311
solution when Gudermannian(x) equals 1. See A248617
solution when inverse Gudermannian(x) equals 1. See A248618
solution x of phi^x = lim n -> infinity (1/n)*sum(k=1,n,(F(k+1)/F(k))^x) where F(k) is the k-th Fibonacci number and phi is the golden ratio = (1+sqrt(5))/2. See A074694
solution x to x^x = A, the Glaisher-Kinkelin constant (A074962). See A173169
solution x to x^x = Khinchin's constant. See A173166
solution x to x^x=11. See A186501
solution x to x^x=12 See A186502
solution x to x^x=13 See A186503
solution x to x^x=14 See A186504
solution x to x^x=7. See A173161
solution x to x^x=8. See A173162
solution x to x^x=9. See A173163
spanning tree constant of the square lattice. See A218387
speed b = c/sqrt(2) in SI units (meter/second), where c = 299792458 (m/s) is the speed of light in vacuum (A003678). See A229962
speed c/a in SI units [meter/second], where "c" is the speed of light in vacuum and "a" is the fine-structure constant (alpha). See A231350
speed of gravity. See A003678
speed of light in feet per second. See A224236
speed of light in miles per hour. See A224238
speed of light in miles per second. See A224237
speed of light in vacuum in SI units, 299792458 meters/second. See A003678
sqrt((3+sqrt(13))/2), a constant related to the asymptotic evaluation of the number of self-avoiding rook paths joining opposite corners on a 3 X n chessboard. See A244089
sqrt((3+x+sqrt(9+6x))/2), where x=sqrt(6). See A190256
sqrt((7+sqrt(13))/6). See A188926
sqrt(.121121112...), cf. A042974. See A042975
sqrt(1 - 1/sqrt(2)), the abscissa of the point of bisection of the arc of the unit lemniscate (x^2 + y^2)^2 = x^2 - y^2 in the first quadrant. See A154739
sqrt(1+2*sqrt(3+4*sqrt(5+6*sqrt(7+...)))). See A254689
sqrt(1+x+sqrt(1+2*x)), where x=sqrt(2/3). See A190184
sqrt(1/phi), where phi=(1+sqrt(5))/2 is the golden ratio. See A197762
sqrt(10) - Pi. See A086777
sqrt(10+2sqrt(5))/(2Pi). See A165954
sqrt(105). See A176461
sqrt(107). See A177935
sqrt(1086). See A178230
sqrt(11)/2. See A147313
sqrt(110). See A176221
sqrt(12)+sqrt(13). See A188928
sqrt(120-18*sqrt(3))/3. See A221185
sqrt(1295). See A176445
sqrt(1297). See A178567
sqrt(13493990). See A177035
sqrt(1365). See A176322
sqrt(145). See A176910
sqrt(15)/2. See A088543
sqrt(15)/6. See A140246
sqrt(157). See A178310
sqrt(163). See A210963
sqrt(16394397). See A176714
sqrt(165). See A178592
sqrt(16926). See A177016
sqrt(17791). See A177937
sqrt(179). See A177936
sqrt(181). See A178231
sqrt(192). See A200243
sqrt(193). See A177272
sqrt(2) + sqrt(3) + sqrt(5). See A241149
sqrt(2) + sqrt(3) - Pi. See A135798
sqrt(2) + sqrt(3). See A135611
sqrt(2) - 1. See A188582
sqrt(2) rounded to n places. See A011548
sqrt(2) truncated to n places. See A011547
sqrt(2)*(1+1/sqrt(3))+2*sqrt(2/5+1/sqrt(5)). See A157698
sqrt(2)*e^(gamma), where gamma is Euler's constant. See A174815
sqrt(2)+sqrt(3/2). See A256965
sqrt(2)/(2*log(2)). See A216701
sqrt(2)/(sqrt(2)-1)^2 = 3*sqrt(2)+4 = 8.242640687119285146405... See A083729
sqrt(2)/3, the volume of a regular octahedron with edge length 1. See A131594
sqrt(2)/log(2). See A239489
sqrt(2)/phi, where phi = (1+sqrt(5))/2. See A094883
sqrt(2)^sqrt(2). See A078333
sqrt(2)^sqrt(2)^sqrt(2). See A194348
sqrt(2)^sqrt(3). See A185111
sqrt(2*e). See A019798
sqrt(2*e)/11. See A019803
sqrt(2*e)/13. See A019804
sqrt(2*E)/15. See A019805
sqrt(2*e)/17. See A019806
sqrt(2*e)/19. See A019807
sqrt(2*e)/21. See A019808
sqrt(2*E)/23. See A019809
sqrt(2*e)/3. See A019799
sqrt(2*e)/5. See A019800
sqrt(2*e)/7. See A019801
sqrt(2*e)/9. See A019802
sqrt(2*log(2)). See A064619
sqrt(2*Pi)*log(2), a constant associated with asymptotic evaluation of random mapping statistics. See A244258
sqrt(2*Pi). See A019727
sqrt(2*Pi)/11. See A019732
sqrt(2*Pi)/13. See A019733
sqrt(2*Pi)/15. See A019734
sqrt(2*Pi)/17. See A019735
sqrt(2*Pi)/19. See A019736
sqrt(2*Pi)/21. See A019737
sqrt(2*Pi)/23. See A019738
sqrt(2*Pi)/3. See A019728
sqrt(2*Pi)/4. See A217481
sqrt(2*Pi)/5. See A019729
sqrt(2*Pi)/7. See A019730
sqrt(2*Pi)/9. See A019731
sqrt(2*Pi*e). See A019633
sqrt(2*Pi*e)/11. See A019638
sqrt(2*Pi*e)/13. See A019639
sqrt(2*Pi*e)/15. See A019640
sqrt(2*Pi*e)/17. See A019641
sqrt(2*Pi*e)/19. See A019642
sqrt(2*Pi*e)/21. See A019643
sqrt(2*Pi*e)/23. See A019644
sqrt(2*Pi*e)/3. See A019634
sqrt(2*Pi*e)/5. See A019635
sqrt(2*Pi*e)/7. See A019636
sqrt(2*Pi*e)/9. See A019637
sqrt(2*Pi/e). See A093814
sqrt(2*Pi^3). See A220610
sqrt(2*sqrt(3*sqrt(4*...))), a variant of Somos's quadratic recurrence constant. See A259235
sqrt(2+sqrt(3)). See A188887
sqrt(2-sqrt(2)), edge length of a regular octagon with circumradius 1. See A101464
sqrt(2-sqrt(3)), edge length of a regular dodecagon with circumradius 1. See A101263
sqrt(2/11). See A187109
sqrt(2/3). See A157697
sqrt(2/7). See A171545
sqrt(2/Pi). See A076668
sqrt(210). See A176441
sqrt(211). See A178040
sqrt(221). See A177157
sqrt(229). See A166125
sqrt(230). See A176909
sqrt(231)/4. See A179021
sqrt(235). See A176524
sqrt(2442). See A177839
sqrt(250). See A020797
sqrt(25277). See A178309
sqrt(255). See A176110
sqrt(27/70). See A171542
sqrt(2730). See A177925
sqrt(2805). See A177345
sqrt(285). See A176104
sqrt(29964677). See A177161
sqrt(3 + sqrt(3 + sqrt(3 + sqrt(3 + ... )))) - A209927. See A223139
sqrt(3 + sqrt(3 + sqrt(3 + sqrt(3 + ... )))). See A209927
sqrt(3 - sqrt(3 - sqrt(3 - sqrt(3 - ... )))). See A223139
sqrt(3) - 1. See A160390
sqrt(3) - Pi/2. See A090551
sqrt(3) rounded to n places. See A011550
sqrt(3) truncated to n places. See A011549
sqrt(3). See A002194
sqrt(3)/(2*(sqrt(2)-1))^(1/3), the Landau-Kolmogorov constant C(3,1) for derivatives in L_2(0, infinity). See A244091
sqrt(3)/2. See A010527
sqrt(3)/4. See A120011
sqrt(3)^sqrt(2). See A185110
sqrt(3)^sqrt(27) = sqrt(27)^sqrt(3). See A194557
sqrt(3)^sqrt(3). See A185094
sqrt(3*Pi/2), the value of an oscillatory integral. See A255984
sqrt(3/(2 Pi))/e See A177067
sqrt(3/14). See A171547
sqrt(3/2). See A115754
sqrt(3/35). See A171546
sqrt(3/7). See A171537
sqrt(3/8). See A187110
sqrt(355/113). See A083871
sqrt(365). See A176980
sqrt(3656953). See A177273
sqrt(4 + sqrt(4 + sqrt(4 + sqrt(4 + ... )))) - A222132. See A222133
sqrt(4 + sqrt(4 + sqrt(4 + sqrt(4 + ... )))). See A222132
sqrt(4 - sqrt(4 - sqrt(4 - sqrt(4 - ... )))) - A222133. See A222132
sqrt(4 - sqrt(4 - sqrt(4 - sqrt(4 - ... )))). See A222133
sqrt(4*e - 1). See A135821
sqrt(4*sqrt(3) - 3) - 1, the solution to the problem of dissecting an equilateral triangle into a square, with 3 cuts (Haberdasher's problem). See A185260
sqrt(4+sqrt(15)). See A188924
sqrt(4051). See A176715
sqrt(4171). See A177159
sqrt(44310). See A178039
sqrt(469). See A176443
sqrt(483). See A176400
sqrt(5 + 2*sqrt(5))/2, the height of a regular pentagon and midradius of an icosidodecahedron with side length 1. See A179452
sqrt(5 + sqrt(5 + sqrt(5 + sqrt(5 + ... )))) - A222134. See A222135
sqrt(5 + sqrt(5 + sqrt(5 + sqrt(5 + ... )))). See A222134
sqrt(5 - sqrt(5 - sqrt(5 - sqrt(5 - ... )))) - A222135. See A222134
sqrt(5 - sqrt(5 - sqrt(5 - sqrt(5 - ... )))). See A222135
sqrt(5) begins: 2.23606797749978969640917366... See A242835
sqrt(5)+sqrt(6). See A188930
sqrt(5)/3 . See A208899
sqrt(5)/4. See A204188
sqrt(5/14). See A171540
sqrt(5/2). See A020797
sqrt(50) = 5*sqrt(2) = 7.0710678118654752440... gives essentially the same sequence. See A010503
sqrt(51)/7. See A179461
sqrt(6/35). See A171539
sqrt(635918528029). See A177271
sqrt(65029). See A177039
sqrt(7 + sqrt(7 + sqrt(7 + sqrt(7 + ... )))) - A223140. See A223141
sqrt(7 + sqrt(7 + sqrt(7 + sqrt(7 + ... )))). See A223140
sqrt(7 - sqrt(7 - sqrt(7 - sqrt(7 - ... )))) - A223141. See A223140
sqrt(7 - sqrt(7 - sqrt(7 - sqrt(7 - ... )))). See A223141
sqrt(7)+sqrt(8). See A188932
sqrt(7)/2. See A242703
sqrt(71216963807). See A177934
sqrt(8 + sqrt(8 + sqrt(8 + sqrt(8 + ... )))). See A235162
sqrt(8 + sqrt(8 + sqrt(8 + sqrt(8 + ... )))). See A236290
sqrt(8 - sqrt(8 - sqrt(8 - sqrt(8 - ... )))). See A235162
sqrt(8 - sqrt(8 - sqrt(8 - sqrt(8 - ... )))). See A236290
sqrt(8)*arctan(sqrt(2)/5). See A267040
sqrt(8/Pi)*log(2), a constant related to the asymptotic evaluation of the minimum number of one-dimensional random walks that have to be examined to compute the maximum. See A243317
sqrt(9.87654321). See A234930
sqrt(9/121 * 100^m + (112 - 44*m)/121), where m=30. See A181284
sqrt(9029). See A177973
sqrt(e + e*sqrt(e + e*sqrt(e + ...))). See A271529
sqrt(e). See A019774
sqrt(e)/11. See A019784
sqrt(e)/12. See A019785
sqrt(e)/13. See A019786
sqrt(e)/14. See A019787
sqrt(e)/15. See A019788
sqrt(e)/16. See A019789
sqrt(e)/17. See A019790
sqrt(e)/18. See A019791
sqrt(E)/19. See A019792
sqrt(e)/2. See A019775
sqrt(e)/21. See A019794
sqrt(e)/22. See A019795
sqrt(e)/23. See A019796
sqrt(E)/24. See A019797
sqrt(E)/3. See A019776
sqrt(e)/4. See A019777
sqrt(e)/5. See A019778
sqrt(e)/6. See A019779
sqrt(e)/7. See A019780
sqrt(e)/8. See A019781
sqrt(e)/9. See A019782
sqrt(exp(1)-Pi/2) + sqrt(exp(1)+Pi/2). See A135822
sqrt(e^(1/e)) = 1.20194336847031... See A072551
sqrt(e^2+e^2): hypotenuse in the right-angled triangle with legs e and e. See A105722
sqrt(e^2+Pi^2): hypotenuse in the right-angled triangle with legs e and Pi. See A105721
sqrt(log_10 Pi). See A099737
sqrt(phi) / (1 - phi/e) where phi=(1+sqrt(5))/2. See A202154
sqrt(Pi + Pi*sqrt(Pi + Pi*sqrt(Pi + ...))). See A268580
sqrt(Pi) / (Gamma(3/4))^2 . See A175574
sqrt(Pi)/(2K)*exp(-gamma/2) where K is the Landau-Ramanujan constant and gamma the Euler-Mascheroni constant. See A088541
sqrt(Pi)/11. See A019713
sqrt(Pi)/12. See A019714
sqrt(Pi)/13. See A019715
sqrt(Pi)/14. See A019716
sqrt(Pi)/15. See A019717
sqrt(Pi)/16. See A019718
sqrt(Pi)/17. See A019719
sqrt(Pi)/18. See A019720
sqrt(Pi)/19. See A019721
sqrt(Pi)/2. See A019704
sqrt(Pi)/21. See A019723
sqrt(Pi)/22. See A019724
sqrt(Pi)/23. See A019725
sqrt(Pi)/24. See A019726
sqrt(Pi)/3. See A019705
sqrt(Pi)/4. See A019706
sqrt(Pi)/5. See A019707
sqrt(Pi)/6. See A019708
sqrt(Pi)/7. See A019709
sqrt(Pi)/8. See A019710
sqrt(Pi)/9. See A019711
sqrt(Pi*e). See A019645
sqrt(Pi*e)/11. See A019655
sqrt(Pi*e)/12. See A019656
sqrt(Pi*e)/13. See A019657
sqrt(Pi*e)/14. See A019658
sqrt(Pi*e)/15. See A019659
sqrt(Pi*e)/16. See A019660
sqrt(Pi*e)/17. See A019661
sqrt(Pi*e)/18. See A019662
sqrt(Pi*e)/19. See A019663
sqrt(Pi*e)/2. See A019646
sqrt(Pi*e)/21. See A019665
sqrt(Pi*e)/22. See A019666
sqrt(Pi*e)/23. See A019667
sqrt(Pi*e)/24. See A019668
sqrt(Pi*e)/3. See A019647
sqrt(Pi*e)/4. See A019648
sqrt(Pi*e)/5. See A019649
sqrt(Pi*e)/6. See A019650
sqrt(Pi*e)/7. See A019651
sqrt(Pi*e)/8. See A019652
sqrt(Pi*e)/9. See A019653
sqrt(Pi*sqrt(163)) - gamma^2. See A102638
sqrt(Pi/2). See A069998
sqrt(Pi/sqrt(e)). See A257530
sqrt(Pi^2 - e^2)/(Pi/2). See A106152
sqrt(r + r*sqrt(r + r*sqrt(r + ...))), where r = (1 + sqrt(5))/2 = golden ratio. See A189970
sqrt(sqrt(2 + sqrt(3))). See A217870
sqrt(sqrt(2) + 1). See A278928
sqrt(sqrt(2) - 1), the radius vector of the point of bisection of the arc of the unit lemniscate (x^2 + y^2)^2 = x^2 - y^2 in the first quadrant. See A154747
sqrt(x) begins with 0.3483118317127931144162557719319698175373163374567.... See A230517
sqrt[3]*e^2/4: area of the regular triangle with side e. See A105729
sqrt[3]*pi^2/4: area of the regular triangle with side Pi. See A105727
Sqrt[51]-4. See A087477
square of cosine of 1 degree. See A111590
square of pi*log_10(e). See A130787
square of sine of 1 degree. See A111486
square of tan 1 degree. See A111493
square of the constant (A100338) which has the continued fraction expansion equal to A006519 (highest power of 2 dividing n). See A100863
square of the constant A130834. See A229728
square of the Euler-Mascheroni constant. See A155969
square root of (Pi * e / 2). See A059444
square root of (Pi/6). See A210975
square root of 1.2. See A245294
square root of 10. See A010467
square root of 101. See A248803
square root of 102. See A192106
square root of 103. See A187768
square root of 11. See A010468
square root of 12. See A010469
square root of 13. See A010470
square root of 14. See A010471
square root of 15. See A010472
square root of 17. See A010473
square root of 18. See A010474
square root of 19. See A010475
square root of 2. See A002193
square root of 2/e. See A227514
square root of 20. See A010476
square root of 21. See A010477
square root of 22. See A010478
square root of 221/25 See A200991
square root of 23. See A010479
square root of 24. See A010480
square root of 26. See A010481
square root of 27. See A010482
square root of 28. See A010483
square root of 29. See A010484
square root of 3 divided by cube root of 4. See A239797
square root of 30. See A010485
square root of 31. See A010486
square root of 32. See A010487
square root of 33. See A010488
square root of 34. See A010489
square root of 35. See A010490
square root of 37. See A010491
square root of 38. See A010492
square root of 39. See A010493
square root of 40. See A010494
square root of 41. See A010495
square root of 42. See A010496
square root of 43. See A010497
square root of 44. See A010498
square root of 45. See A010499
square root of 46. See A010500
square root of 47. See A010501
square root of 48. See A010502
square root of 5. See A002163
square root of 51. See A010504
square root of 52. See A010505
square root of 53. See A010506
square root of 54. See A010507
square root of 55. See A010508
square root of 56. See A010509
square root of 57. See A010510
square root of 58. See A010511
square root of 59. See A010512
square root of 6. See A010464
square root of 60. See A010513
square root of 61. See A010514
square root of 62. See A010515
square root of 63. See A010516
square root of 65. See A010517
square root of 66. See A010518
square root of 67. See A010519
square root of 68. See A010520
square root of 69. See A010521
square root of 7. See A010465
square root of 70. See A010522
square root of 71. See A010523
square root of 72. See A010524
square root of 73. See A010525
square root of 74. See A010526
square root of 75, which is 8.6602540378443864676372317... See A010527
square root of 76. See A010528
square root of 77. See A010529
square root of 78. See A010530
square root of 79. See A010531
square root of 8. See A010466
square root of 80. See A010532
square root of 82. See A010533
square root of 83. See A010534
square root of 84. See A010535
square root of 85. See A010536
square root of 86. See A010537
square root of 87. See A010538
square root of 88. See A010539
square root of 89. See A010540
square root of 90. See A010541
square root of 91. See A010542
square root of 92. See A010543
square root of 93. See A010544
square root of 94. See A010545
square root of 95. See A010546
square root of 96. See A010547
square root of 97. See A010548
square root of 98. See A010549
square root of 99. See A010550
square root of cosine of 1 degree. See A111659
square root of Pi. See A002161
square root of sine of 1 degree. See A111460
square root of the golden ratio. See A139339
standard atmosphere in SI units. See A213611
standard gravity acceleration (one "gee") in SI units. See A072915
standard normal deviate for a 95% confidence interval. See A220510
Start with 3; other terms are formed from pairs of successive digits in decimal expansion of Pi. See A037244
Start with a(0)=3; other terms are formed from triples of successive digits in the decimal expansion of Pi. See A035331
Start with decimal expansion of n; if all digits have the same parity, stop; otherwise write down the number formed by the even digits and the number formed by the odd digits and add them; repeat. See A059717
starting value b(0) such that the fractional part of the sequence b(n+1) = b(n) + tanh(b(n)) approaches zero as n -> infinity. See A135935
Starting with 0, 0, 7, 9, 5,... this is also the decimal expansion of 1/(4Pi). Example: 0.079577471545947667884441881686257181... See A132715
strongly carefree constant: product(1 - (3*p-2)/(p^3)), p prime >= 2). See A065473
success probability associated with the optimal stopping problem on patterns in random binary strings. See A246771
suggested value for N_eff: the effective number of neutrino species present in the era before recombination. See A225359
Sum (1/(2^x)^(2^x) {x,1,Infinity}. See A134880
Sum (1/(n^3)^(n^3) {n,1,Infinity}. See A134879
Sum (1/(x!!)^(x!!) {x,1,Infinity}. See A134877
Sum (1/(x^2)^(x^2) {x,1,Infinity}. See A134878
sum 1/(p * log p) over the primes p=2,3,5,7,11,... See A137245
sum 1/(p ^2 * log p) over the primes p=2,3,5,7,11,... See A221711
sum 1/(p(p+1)) over the primes p. See A179119
sum 1/(p*(p+2)) over the primes p. See A185380
sum 1/(p*2^p) where p runs through the set of Artin primes (primes with primitive root 2). See A085108
sum 1/(p-1)^2 over primes p. See A086242
Sum 1/F(n)^2. See A105393
Sum 1/L(n)^2. See A105394
sum 1/p(1) + 1/(p(2)*p(3)) + 1/(p(4)*p(5)*p(6)) + ..., where p(n) is the n-th prime. See A139395
sum 1/p^2 over primes p == 1 (mod 3). See A175644
sum 1/p^3 over primes == 1 (mod 3). See A175645
Sum 1/q, where q is any prime of the form m^2 + 1. See A172168
sum for 1 to infinity of fraction sequence with numerator triangular numbers and denominator sum of 4th power of primes. See A097880
sum from 1 to infinity of fraction sequence with numerator triangular numbers and denominator sum of prime cubes. See A097881
sum log(p)/p^2 over the primes p=2,3,5,7,11,... See A136271
sum n^(-2n) for n=1 through infinity. See A086648
sum of alternating reciprocal square roots, omitting terms where n is a perfect square. See A178678
sum of alternating series of reciprocals of primes. See A078437
sum of alternating series of reciprocals of Ramanujan primes, Sum_{n>=1} (1/R_n)(-1)^(n-1), where R_n is the n-th Ramanujan prime, A104272(n). See A190303
sum of cubes of reciprocals of nonprime numbers. See A278419
Sum of digits after the decimal point in the decimal expansion of (3/2)^n. See A170827
sum of even-numbered columns of array G defined at A190404. See A190411
sum of even-numbered rows of array G defined at A190404. See A190409
sum of inverses of unrestricted partition function. See A078506
sum of odd-numbered columns of array G defined at A190404. See A190410
sum of odd-numbered rows of array G defined at A190404. See A190408
sum of reciprocal golden rectangle numbers. See A290565
sum of reciprocal of product of numbers between perfect squares. See A219733
sum of reciprocal perfect powers (excluding 1). See A072102
sum of reciprocals of A051451(n), which includes 1 and values of LCM[1,...,x], where x is a prime power (A000961). See A064890
sum of reciprocals of all prime triplets. See A275519
sum of reciprocals of Bell numbers for n>0. See A243991
sum of reciprocals of composite powers. See A284748
sum of reciprocals of cousin primes. See A194098
sum of reciprocals of fourth powers of the nonprime numbers. See A282469
sum of reciprocals of LCM[1..n]=A003418(n). See A064859
sum of reciprocals of primorial numbers: 1/2 + 1/6 + 1/30 + 1/210 + ... = 0.7052301717918009651474316828882485137435776391... See A064648
sum of reciprocals of squares of Fibonacci numbers. See A105393
sum of reciprocals of squares of Lucas numbers. See A105394
sum of reciprocals of squares of partition numbers. See A200089
sum of reciprocals of the strict partition function (the function giving the number of partitions of an integer into distinct parts). See A237515
sum of reciprocals, column 3 of the natural number array, A185787. See A228049
sum of reciprocals, row 2 of the natural number array, A185787. See A228044
sum of reciprocals, row 2 of Wythoff array, W = A035513. See A228040
sum of reciprocals, row 3 of the natural number array, A185787. See A228045
sum of reciprocals, row 3 of Wythoff array, W = A035513. See A228041
sum of reciprocals, row 4 of the natural number array, A185787. See A228046
sum of reciprocals, row 4 of Wythoff array, W = A035513. See A228042
sum of reciprocals, row 5 of the natural number array, A185787. See A228047
sum of reciprocals, row 5 of Wythoff array, W = A035513. See A228043
sum of squares of reciprocals of nonprime numbers. See A275647
sum of the alternating series of reciprocals of composite numbers squared. See A276494
sum of the alternating series of reciprocals of composite numbers with distinct prime factors. See A275110
sum of the alternating series of reciprocals of composite numbers. See A269229
sum of the alternating series of reciprocals of cubed composite numbers. See A285308
sum of the alternating series of reciprocals of nonprime numbers. See A275712
sum of the alternating series tau(3), with tau(n) = sum_(k>0) (-1)^k*log(k)^n/k. See A242611
sum of the alternating series tau(4), with tau(n) = sum_(k>0) (-1)^k*log(k)^n/k. See A242612
sum of the alternating series tau(5), with tau(n) = sum_(k>0) (-1)^k*log(k)^n/k. See A242613
Sum of the first n digits to the right of the decimal expansion of 1/n. See A121060
sum of the inverse twin prime products. See A209328
sum of the reciprocal of the squares of the numbers whose digits are all even. See A258271
sum of the reciprocals of A016041 (primes that are binary palindromes). See A194097
sum of the reciprocals of all positive integers having distinct digits (there are exactly 8877690 such integers). See A117914
sum of the reciprocals of all positive integers with digits in strictly decreasing order (there are exactly 1022 such integers - see A009995). See A256955
sum of the reciprocals of averages of adjacent pairs of Fibonacci numbers: Sum_{n>=1} 2/(A000045(n) + A000045(n+1)). See A261390
sum of the reciprocals of pandigital numbers in which each digit appears exactly once. See A179954
sum of the reciprocals of squared 3-almost primes. See A131653
sum of the reciprocals of squared semiprimes. See A117543
sum of the reciprocals of the averages of adjacent pairs of perfect numbers (A000396). See A259931
sum of the reciprocals of the averages of the twin prime pairs. See A241560
sum of the reciprocals of the binary palindromic numbers. See A244162
sum of the reciprocals of the decagonal numbers (A001107). See A244647
sum of the reciprocals of the Dodecagonal numbers (A051624). See A244649
sum of the reciprocals of the elements of A007908. See A137197
sum of the reciprocals of the Enneagonal or Nonagonal numbers (A001106). See A244646
sum of the reciprocals of the hendecagonal numbers (A051682). See A244648
sum of the reciprocals of the heptagonal numbers (A000566). See A244639
sum of the reciprocals of the Mersenne primes. See A173898
sum of the reciprocals of the octagonal numbers (A000567). See A244645
sum of the reciprocals of the palindromic numbers A002113. See A118031
sum of the reciprocals of the palindromic primes A002385 (Honaker's constant). See A118064
sum of the reciprocals of the pentagonal numbers (A000326). See A244641
sum of the reciprocals of the tetradecagonal numbers A051866. See A275792
sum of the reciprocals of the Wieferich primes. See A277587
sum of the series 1/9 + 1/19 + 1/29 + 1/39 + 1/49 + ... where the denominators have exactly one 9. See A140502
sum of [0;n,n,n,...]^2 for n=1...infinity. See A205326
sum over lower triangular subarray of array G defined at A190404. See A190415
sum over the inverse icosahedral numbers. See A175578
sum over the inverse Octahedral Numbers. See A175577
sum over the inverse products of adjacent odd primes. See A209329
sum over upper triangular subarray of array G defined at A190404. See A190412
sum {k=1..inf.} 1/2^Partition(k). See A178745
Sum {k>=1} 1/(k^(3/2) + k^(1/2)). See A226317
Sum {n=0..inf} 1/3^(2^n). See A078885
Sum {n=0..inf} 1/4^(2^n). See A078585
Sum {n=0..inf} 1/5^(2^n). See A078886
Sum {n=0..inf} 1/6^(2^n). See A078887
Sum {n=0..inf} 1/7^(2^n). See A078888
Sum {n=0..inf} 1/8^(2^n). See A078889
Sum {n=0..inf} 1/9^(2^n). See A078890
Sum {n>=0} 1/2^(2^n). See A007404
Sum'_{(x,y,z)=-infinity..infinity} 1/(x^2+y^2+z^2)^2, where the 'prime' indicates that the term x=y=z=0 is to be left out. See A259281
sum'_{m,n,p = -infinity .. infinity} (-1)^(m+n)/sqrt(m^2+n^2+p^2), negated. See A185578
sum'_{m,n,p = -infinity..infinity} (-1)^m/sqrt(m^2+n^2+p^2), negated. See A185577
sum'_{m,n,p = -infinity..infinity} 1/(m^2+n^2+p^2)^s, analytic continuation to s=1/2. The prime at the sum symbol means the term m=n=p=0 is omitted. See A185576
sum( 1/(e^x)^(e^x), x=1..infinity ). See A134881
sum( i>=0, 1/(2*i+1)^3 ). See A233091
sum( i>=0, 1/(2*i^2+1) ). See A232883
sum( k>=0, 1/(k^2+1) ). See A113319
sum( k>=1, (-120+329*k+568*k^2)/(k*(1+k)*(1+2*k)*(1+4*k)*(3+4*k)*(5+4*k)) ). See A019673
sum( kronecker(-1/p)/p, p prime) See A166509
sum( n=1..infinity, 1 / F(n)^n ), where F=A000045 (Fibonacci numbers). See A201615
sum(1/(2^q-1)) with the summation extending over all pairs of integers (p,q)=1 0<p/q/<phi where phi is the Golden ratio. See A081544
sum(1/(2^q-1)) with the summation extending over all pairs of integers (p,q)=1 0<p/q<e=2.718... See A081573
sum(1/(2^q-1)) with the summation extending over all pairs of integers (p,q)=1 0<p/q<Pi. See A081550
sum(1/(2^q-1)) with the summation extending over all pairs of integers (p,q)=1 0<p/q<sqrt(2). See A081564
sum(1/(6*m)^2,m=1..infinity). See A086726
sum(1/(6*m+1)^2,m=0..infinity). See A086727
sum(1/(6*m+2)^2,m=0..infinity). See A086728
sum(1/(6*m+3)^2,m=0..infinity). See A086729
sum(1/(6*m+4)^2,m=0..infinity). See A086730
sum(1/(6*m+5)^2,m=0..infinity). See A086731
sum(1/(k^(phi(k)), k=1..infinity), where phi(n) is the Euler totient function. See A239725
sum(1/(n*binomial(2*n,n)), n=1..infinity). See A073010
sum(1/A030450). See A258621
sum(1/A055209). See A258619
Sum(1/c^c) where c is nonprime. See A094724
sum(1/floor(2^n/n),n=1..+oo). See A193359
sum(1/Gamma(n/2), n>=1). See A222392
Sum(1/l^g) where l and g are the lesser and greater of twin prime pairs. See A096249
Sum(1/n^(n/2)). See A096251
Sum(1/n^prime(n)). See A096250
Sum(1/p^p) where p is prime. See A094289
Sum(1/t^t) where t is the greater of twin prime pairs. See A096248
Sum(1/t^t) where t is the lesser of twin prime pairs. See A096247
sum(c[k]/prime[k], k=2..infinity), where c[k]=-1 if p==1 (mod 4) and c[k]=+1 if p==3 (mod 4). See A086239
sum(e^(1/n!)-1,n>=0). See A165732
sum(e^(1/n!)-1,n>=1). See A165733
sum(i=1..infinity, 1/14^i). See A021017
sum(i=1..infinity, 1/9^i). See A020821
Sum(k = 0 to inf; d(n!)/n!). See A071815
sum(k has exactly two bits equal to 1 in base 2, 1/k). See A179951
Sum(k=1;inf)(1/(10^(4*k+2)-1))-(1/(10^(2*k+1)-1)). See A159200
sum(k>0, (-1)^k*log(k)/k) = gamma*log(2)-log(2)^2/2. See A091812
sum(k>0,(-1)^k*log(k)/k). See A091812
sum(k>0,(-1)^k*log(k)^2/k). See A242494
sum(k>=0, 1/2^floor(k*phi) ) where phi = (1+sqrt(5))/2. See A073115
sum(k>=0, 1/C(k)), where C(k) is a Catalan Number (A000108). See A268813
sum(k>=0,(-1)^(k+1)*A000045(k)/k!). See A099935
sum(k>=0,sin(Pi*phi^k)) where phi=(1+sqrt(5))/2. See A090966
sum(k>=1, 1/C(k)), where C(k) is a Catalan Number (A000108). See A121839
Sum(n >= 1, (-1)^(n + 1)*24/(n*(n + 1)*(n + 2)*(n + 3)). See A242023
sum(n=1,Infinity,1/n^(n^n)) See A215578
sum(n>=0, (2n)!/(n!)^3 ) = sum(n>=0, C(2n,n)/n! ). See A234846
sum(n>=0, 1/(1+n!)). See A217702
sum(n>=1, ((-1)^(n+1))*1/phi^n ). See A132338
Sum(n>=1, (-1)^(n + 1)*6/(n*(n + 1)*(n + 2)). See A242024
sum(n>=1, 1/n^(n^prime(n)) ) See A215633
sum(n>=1, mu(n)/10^n ). See A238272
sum(n>=1, mu(n)/2^n ). See A238270
sum(n>=1, mu(n)/3^n ). See A238271
sum(n>=1, mu(n)/n^n ) where mu is the Moebius function. See A238273
Sum(n>=1} |sin((n*Pi)/3)|^n. See A277755
Sum[ (-1)^(k+1) * 1/p(k)^p(k) ], where p(k) = Prime[k]. See A122147
sum_(k>1)(1/(k*(k-1)*zeta(k)), a constant related to Niven's constant. See A242977
sum_(n=1..infinity) (-1)^(n+1)*H(n,2)/n^2, where H(n,2) is the n-th harmonic number of order 2. See A240264
sum_(n=1..infinity) (-1)^(n-1)*H(n)/n^2, where H(n) is the n-th harmonic number. See A233090
sum_(n=1..infinity) (-1)^(n-1)*H(n)/n^3 where H(n) is the n-th harmonic number. See A233033
sum_(n=1..infinity) (H(n)/(n+1))^2, where H(n) is the n-th harmonic number. See A241753
sum_(n=2..infinity) (-1)^n*zeta(n)/n^2. See A231132
sum_(n>=1) (H(n)^3/(n+1)^2) where H(n) is the n-th harmonic number. See A244667
sum_(n>=1) (H(n)^3/(n+1)^3) where H(n) is the n-th harmonic number. See A244674
sum_(n>=1) (H(n)^3/(n+1)^3) where H(n) is the n-th harmonic number. See A244675
sum_(n>=1) (H(n)^3/(n+1)^6) where H(n) is the n-th harmonic number. See A244676
sum_(n>=1) (H(n,2)/n^2) where H(n,2) = A007406(n)/A007407(n) is the n-th harmonic number of order 2. See A244664
sum_(n>=1) (H(n,3)/n^3) where H(n,3) = A007408(n)/A007409(n) is the n-th harmonic number of order 3. See A244665
sum_(n>=1) H(n)^2/n^3 where H(n) is the n-th harmonic number (Quadratic Euler Sum S(2,3)). See A238181
sum_(n>=1) H(n)^2/n^4 where H(n) is the n-th harmonic number (Quadratic Euler Sum S(2,4)). See A238182
sum_(n>=1) H(n)^2/n^5 where H(n) is the n-th harmonic number. See A238168
sum_(n>=1) H(n)^2/n^7 where H(n) is the n-th harmonic number (Quadratic Euler Sum S(2,7)). See A238183
sum_(n>=1) H(n)^3/n^4 where H(n) is the n-th harmonic number. See A238169
sum_(n>=1) H(n)^4/(n+1)^3 where H(n) is the n-th harmonic number. See A241215
sum_(n>=1) H(n,2)/n^4 where H(n,2) = A007406(n)/A007407(n) is the n-th harmonic number of order 2. See A238166
sum_(n>=1) H(n,3)/n^5 where H(n,3) = A007408(n)/A007409(n) is the n-th harmonic number of order 3. See A238167
sum_n=1^inf 1/phi(n)^2. See A109695
sum_n=1^inf 1/sigma(n)^2. See A109693
sum_n=1^inf 1/sigma_2(n). See A109694
sum_p 1/((p-1)*log p) over the primes p=A000040. See A154946
sum_p 1/(p^2-1), summed over the primes p = A000040. See A154945
sum_q 1/(q*(q-1)) over the semiprimes q = A001358. See A152447
sum_q 1/(q-1)^2 over the semiprimes q = 4,6,9,10,... See A154937
Sum_{ k >= 1, k has no digit equal to 0 in base 2 } 1/k. See A065442
Sum_{ k >= 1, k has no zero digit in base 10 } 1/k. See A082839
Sum_{ k >= 1} (k - 1 - PrimePi[k])/2^k. See A119524
Sum_{ k >= 1} A010051(k)/2^(k-1). See A119523
Sum_{h >= 0} 1/binomial(2*h,h). See A091682
Sum_{h >= 0} 1/binomial(h, floor(h/2)). See A248181
Sum_{i >= 0} (i!)^2/(2*i+1)!. See A248897
Sum_{i >= 1} 1/(4*i^2-1)^3. See A248895
Sum_{i >= 1} 1/(4*i^2-1)^4. See A248896
sum_{i >= 1} f(i)/g(i), where f(i) = triangular number(i) and g(i) = (sum of first i primes)^3. See A097908
sum_{i >= 1} i/prime(i)^2. See A097906
sum_{i >= 1} t(i)/g(i), where t(i) = triangular number(i) and g(i) = (sum of first i primes)^2. See A097907
sum_{i >= 1} t(i)/g(i), where t(i) = triangular number(i) and g(i) = (sum of first i primes)^4. See A097909
Sum_{i=1..infinity} 1/A028552(i). See A257936
Sum_{i>0} 1/8^i. See A020806
Sum_{i>=0} (4/7)^i. See A157532
Sum_{i>=0} 0.2^i = 1.25. For n > 2, the 10^0's digit of a(n) + the 10^1's digit of a(n+1) + ... + the 10^m's digit of a(n+m) = 9 for some finite m. See A279035
sum_{i>=0} 1/((6*i+2)*(6*i+5)). See A196548
sum_{i>=0} 1/((8*i+1)*(8*i+5)). See A196554
Sum_{i>=0} A004018(i)/2^i. See A124118
Sum_{i>=1} -(-1)^i/sqrt(i). See A113024
Sum_{i>=1} 1/A092143(i). See A117871
sum_{j=0..infinity} exp(-Pi*(2j+1)^2). See A196535
Sum_{j>=0} Sum_{i>=0} (-1/4)^i*(-1)^j*binomial(2i,i)/((2j+1)(i+2j+2)). See A271563
sum_{j>=1} tau(j)/j^3 = zeta(3)^2. See A183030
sum_{j>=1} tau(j)/j^4 = Pi^8/8100 . See A183031
Sum_{k >= 0} (4/(4*k+1) - 3/(3*k+1) + 2/(2*k+1) - 1/(k+1)). See A282821
Sum_{k >= 0} 1/(4*k+1)^2. See A222183
Sum_{k >= 0} 1/(4*k+3)^2. See A247037
Sum_{k >= 1} 1/k^sigma_*(k) where sigma_*(n) is the sum of the anti-divisors of n. See A192266
Sum_{k >= 1} cos(k)/k^2. See A122143
Sum_{k >= 1} k^(-k^2). See A258102
sum_{k >= 1} log(1+1/2^k), a digital tree search constant. See A246768
Sum_{k >= 1} sin(k)/k^2. See A096418
Sum_{k=-infinity..+infinity} log(2)/(2^(-k/2) + 2^(k/2)). See A114609
Sum_{k=-infinity..+infinity} log(2)/(2^(-k/2) + 2^(k/2))^2. See A114610
Sum_{k=1..5000000} (-1)^(k-1)/(2k-1). See A216546
Sum_{k=1..500000} (-1)^(k-1)/(2k-1). See A216544
Sum_{k=1..50000} (-1)^(k+1) / k. See A013707
Sum_{k=1..50000} (-1)^(k-1)/(2k-1). See A216542
Sum_{k=1..inf.} 1/((2k-1)^2(2k+1)^2) = (Pi^2-8)/16. See A123092
sum_{k=1..inf.} pi^(-k)*(prime(k). See A111182
sum_{k=1..infinity} (H(k)/k)^2, where H(k) = sum_{j=1..k} 1/j. See A218505
Sum_{k=1..inf} 1/(10^k-1). See A073668
Sum_{k=1..inf} 1/(2^k-1)^2. See A065443
sum_{k=1..inf} 1/2^(prime(k)-k)). See A111120
Sum_{k=1..inf} d(k)/2^k where d(k) are divisors of k, 1<=d<=k. See A066766
Sum_{k=1..oo}{1/A045926(k)^2} = 1/2^2 + 1/4^2 + 1/6^2 + 1/8^2 + 1/22^2 + 1/24^2 + 1/26^2 + ... = 0.3663600397195232951718825089674124266251739503421187600... See A258271
sum_{k=2..infinity} 1/(k^2*log(k)). See A168218
Sum_{k=3..inf} 1/(k log k (log log k)^2). See A118582
Sum_{k>0} (k+1)/(k*((k+1)^2+1)). See A268046
Sum_{k>0} -(-1)^k / k!^(1/k). See A100106
Sum_{k>0} 1/(k*((k+1)^2+1)). See A268086
sum_{k>=0} (-1)^k * (3k + 1)^(-3). See A226735
sum_{k>=0} (-1)^k*(log(4k+1)/(4k+1)+log(4k+3)/(4k+3)). See A242011
Sum_{k>=0} (-1)^k/((2k+1)*(2k+3)*(2k+5)). See A239545
Sum_{k>=0} (-1)^k/(3*k+1)^2. See A262178
Sum_{k>=0} (-1)^k/(5k+1). See A181122
Sum_{k>=0} (-1)^k/(5k+2). See A262246
Sum_{k>=0} (2*k+1)/binomial(4*k,2*k). See A276483
Sum_{k>=0} (2*k+2)/binomial(4*k+2,2*k+1). See A276484
sum_{k>=0} (log(3k+1)/(3k+1)-log(3k+2)/(3k+2)). See A242010
Sum_{k>=0} (zeta(2k)/(2k+1))*(3/4)^(2k) (negated). See A256319
Sum_{k>=0} 1/(5k)!. See A269296
Sum_{k>=0} 1/Product_{i=0..k} (2^(2^i) - 1). See A258714
Sum_{k>=0} zeta(2k)/((2k+1)*4^(2k)) (negated). See A256318
Sum_{k>=0}((-1)^k/2^(2^k)). See A275975
Sum_{k>=1} (-1)^k (k+1)/Fibonacci(k)^2. See A190648
Sum_{k>=1} (-1)^k*(zeta(4k)-1) (negated). See A256920
Sum_{k>=1} (-1)^k*log(k)/sqrt(k). See A265162
Sum_{k>=1} (1/2)^A058331(k); based on a diagonal of the natural number array, A000027. See A190407
Sum_{k>=1} (1/2)^S(k-1), where S=A001844 (centered square numbers). See A190406
Sum_{k>=1} (1/2)^T(k), where T=A000217 (triangular numbers); based on column 1 of the natural number array, A000027. See A190405
Sum_{k>=1} (c(2k)-c(2k-1)), where c = convergents to e. See A265308
Sum_{k>=1} (c(2k)-c(2k-1)), where c = convergents to sqrt(6). See A265302
Sum_{k>=1} (c(2k)-c(2k-1)), where c = convergents to sqrt(8). See A265305
Sum_{k>=1} (c(2k)-e), where c = convergents to e. See A265307
Sum_{k>=1} (e-c(2k-1)), where c = convergents to e. See A265306
Sum_{k>=1} (x-c(2k-1)), where c = convergents to (x = sqrt(6)). See A265300
Sum_{k>=1} (x-c(2k-1)), where c = convergents to (x = sqrt(8)). See A265303
Sum_{k>=1} (zeta(2k)/k)*(1/3)^(2k). See A256923
Sum_{k>=1} (zeta(2k)/k)*(1/3)^(2k). See A256929
Sum_{k>=1} (zeta(2k)/k)*(2/3)^(2k). See A256924
Sum_{k>=1} (zeta(2k)/k)*(2/3)^(2k). See A256930
Sum_{k>=1} (zeta(4k)-1). See A256919
Sum_{k>=1} 1/((3k-2)*(3k-1)*(3k)). See A239362
Sum_{k>=1} 1/(2*k)-tanh(1/(2*k)). See A247621
Sum_{k>=1} 1/(3^k * 2^(3^k)). See A192014
Sum_{k>=1} 1/(4^k - 1). See A248721
Sum_{k>=1} 1/(5^k - 1). See A248722
Sum_{k>=1} 1/(6^k - 1). See A248723
Sum_{k>=1} 1/(7^k - 1). See A248724
Sum_{k>=1} 1/(8^k - 1). See A248725
Sum_{k>=1} 1/(9^k - 1). See A248726
Sum_{k>=1} 1/7^k. See A020793
sum_{k>=1} 1/binomial(3k,k). See A229705
Sum_{k>=1} 1/F(k) where F(k) is the k-th Fibonacci number A000045(k). See A079586
Sum_{k>=1} c(2k), where c = convergents to (x = sqrt(6)). See A265301
Sum_{k>=1} c(2k), where c = convergents to (x = sqrt(8)). See A265304
Sum_{k>=1} exp(-k^2)/k. See A227336
Sum_{k>=1} H(k)*H(k,2)/k^2 where H(k) is the k-th harmonic number and H(k,2) the k-th harmonic number of order 2. See A256987
Sum_{k>=1} H(k)^3/k^2 where H(k) is the k-th harmonic number. See A256988
Sum_{k>=1} k/prime(k)^3. See A097879
Sum_{k>=2} (-1)^k*zeta(k)/(k*2^k). See A256922
Sum_{k>=2} (p mod 4 - 2)/p^2 where p=prime(k). See A086240
Sum_{k>=2} zeta(2k+1)/((2k+1)*2^(2k)). See A255681
Sum_{k>=2} zeta(k)/(k*2^k). See A256921
sum_{m,n >= 1} (-1)^(m + n)*log(m)*log(n)/(m*n*(m + n)). See A255987
Sum_{m,n >= 1} (-1)^(m + n)/(m*n*(m + n)). See A255986
sum_{m,n,p = -infinity..infinity} (-1)^(m+n)/sqrt( m^2+n^2+(p-0.5)^2 ). See A185580
sum_{m,n,p = -infinity..infinity} (-1)^m/sqrt(m^2+(n-0.5)^2+(p-0.5)^2). See A185579
sum_{m,n,p = -infinity..infinity} 4*(-1)^(m+n+p)/sqrt(m^2+(2n-0.5)^2+(2p-0.5)^2). See A185583
sum_{m,n,p = -infinity..infinity} 4*(-1)^(m+p)/sqrt(m^2+(2n-0.5)^2+(2p-0.5)^2). See A185582
Sum_{m=1 to infinity} (-1)Sigma(m)/m^3. See A123732
Sum_{m=1 to infinity} (-1)Sigma(m)/m^4. See A123733
Sum_{m=1 to infinity} (-1)Sigma(m)/m^5. See A123734
Sum_{m>=0} 1/(2^2^m - 1). See A048649
Sum_{m>=1, n>=1} 1/(m^2*(m^2 + m*n + n^2)). See A091349
Sum_{m>=1} (1/(2^m*m^2)). See A076788
Sum_{m>=1} 1/(m^2 + 1). See A259171
Sum_{n = -infinity..infinity} 5^(n/2)*((1+sqrt(5))/2)^(-n^2). See A219781
Sum_{n = -oo..oo} exp(-n^2). See A195907
Sum_{n = -oo..oo} e^(-2*n^2). See A218792
Sum_{n = 0 .. infinity } (-1)^(n+1) / n!!. See A202688
Sum_{n = 1 .. infinity } ((-1)^(n+1)) / sigma(n)^n. See A215141
Sum_{n = 1 .. infinity } (-1)^(n+1)/ prime(n)^n. See A201614
Sum_{n = 1 .. infinity } 1 / L(n)^n where L(n) is the n-th Lucas number. See A215941
Sum_{n = 1 .. infinity } 1 / sigma(n)^n. See A215140
Sum_{n = 1 .. infinity }[ 1 / Sum {i = 1 .. m} d(i)^n] where d(i) are the divisors of n and m = tau(n) is the number of divisors of n. See A199858
Sum_{n = 1 .. infinity} (-1)^(n+1)/F(n)^n where F=A000045 is the Fibonacci sequence. See A201616
Sum_{n = 1, ..., infinity } 1/n^(2^n). See A216992
Sum_{n = 1..Infinity} 1/L(n), where L(n) is the n-th Lucas number. See A093540
Sum_{n = 2 .. infinity }[ 1 / Sum {i=1..m} d(i)^n] where d(i) are the distinct prime divisors of n and m = omega(n) is the number of distinct prime divisors of n. See A200334
Sum_{n > 0} n*(n!)^2/(2n)!. See A145429
Sum_{n >= 0) n/binomial(2*n, n). See A145429
sum_{n >= 0} (-1)^n*H(n)/(2n+1)^3, where H(n) is the n-th harmonic number. See A247670
Sum_{n >= 0} 1/(2^2^n+1). See A051158
Sum_{n >= 0} n/binomial(2*n+1, n) = 2/3. See A010722
Sum_{n >= 1, b(n) != 1} 1/b(n)^n, where b(n) = A217626(n). See A219995
sum_{n >= 1} (2n)!/(1!*2!*...*n!). See A248696
sum_{n >= 1} (2n)!/(3n)!. See A248760
sum_{n >= 1} (sin(1/n))^2. See A248945
sum_{n >= 1} (sin(2/n))^2. See A248949
sum_{n >= 1} (tan(1/n))^2. See A248947
sum_{n >= 1} (tan(2/n))^2. See A248951
Sum_{n >= 1} 1/(Gamma(n/2)*Gamma((n+1)/2)). See A222391
Sum_{n >= 1} 1/3^prime(n). See A132800
Sum_{n >= 1} 1/4^prime(n). See A132806
Sum_{n >= 1} 1/5^prime(n). See A132797
Sum_{n >= 1} 1/6^prime(n). See A132817
Sum_{n >= 1} 1/7^prime(n). See A132822
Sum_{n >= 1} 1/A007504(n), where A007504(n) is the sum of the first n primes. See A122989
Sum_{n >= 1} 1/n^n. See A073009
Sum_{n >= 1} 1/p(n), where p(n) is the product of numbers n^2 + 1 to (n+1)^2 - 1. See A219733
Sum_{n >= 1} 1/S(n)!, where S(n) is the Kempner number A002034. See A071120
sum_{n >= 1} 1/sqrt(n!). See A248761
Sum_{n >= 1} cos(n)/sqrt(n), negated. See A263192
sum_{n >= 1} coth(Pi*n)/n^7 = (19/56700)*Pi^7. See A247671
Sum_{n >= 1} G_n/n^2, where G_n are Gregory's coefficients. See A270857
Sum_{n >= 1} n!/(2*n)!. See A214869
sum_{n >= 1} n!/p(n), where p(n) = [n/1]!*[n/2]!*...*[n/n]!, and [ ] = floor. See A248695
Sum_{n >= 1} sigma_1(n)/n!. See A227988
Sum_{n >= 1} sigma_2(n)/n!. See A227989
sum_{n >= 1} sin(1/n^2). See A248946
sum_{n >= 1} sin(2/n^2). See A248950
Sum_{n >= 1} sin(n)/sqrt(n). See A263193
sum_{n >= 1} tan(1/n^2). See A248948
Sum_{n >= 1} |G_n|/n^2, where G_n are Gregory's coefficients. See A270859
Sum_{n >= 2} (-1)^n/log(n). See A099769
Sum_{n >= 2} (1/log(n)^n). See A099871
Sum_{n >= 2} (1/Product_{i >= 2} K(i)) where K(n) is the Kempner function A002034. See A048835
Sum_{n >= 2} (K(n)/n!), where K(n) is A002034. See A048834
Sum_{n >= 2} (n/Product_{i >= 2} K(i)), where K(n) is the Kempner function A002034. See A048836
Sum_{n >= 2} (n^2/Product_{i >= 2} K(i)), where K(n) is the Kempner function A002034. See A048837
Sum_{n >= 2} (n^3/Product_{i >= 2} K(i)), where K(n) is the Kempner function A002034 See A048838
Sum_{n >= 2} 1/S(n)!, where S(n) is the Kempner number A002034(n). See A048799
Sum_{n >= 2} zeta(n)/n!. See A093720
sum_{n=0..infinity} (-1)^n/(2^(3n)*(3n+1)). See A145422
sum_{n=0..infinity} 1/10^(3^n), a transcendental number. See A225569
sum_{n=0..inf} (-1)^n/((2n+1)^2*binomial(2n,n)). See A145436
sum_{n=0..inf} (n!/(n+2)!)^2. See A145426
sum_{n=0..inf} (n!/(n+3)!)^2. See A145427
sum_{n=0..inf} binomial(4n,2n)/2^(6n). See A145439
Sum_{n=1..infinity} (-1)^(n-1)/(n + log(n)). See A257964
Sum_{n=1..infinity} (-1)^(n-1)/(n - log(n)). See A257972
Sum_{n=1..Infinity} -(-1)^n/n^n = Integral_{x=0..1} x^x dx. See A083648
sum_{n=1..infinity} 1/(n*(25n^2-1)). See A145424
sum_{n=1..infinity} 1/(n*(36n^2-1)). See A145425
sum_{n=1..infinity} n^3/(exp(2*Pi*n/13)-1). See A226121
sum_{n=1..infinity} n^3/(exp(2*Pi*n/7)-1). See A226120
sum_{n=1..inf} (-1)^(n-1)*2^n/binomial(2n,n). See A145432
sum_{n=1..inf} 1/(n^3*binomial(2n,n)). See A145438
sum_{n=1..inf} 3^n*(n!)^2/(2n)!. See A145428
sum_{n=1..inf} n^2*(n!)^2/(2n)!. See A145430
sum_{n=1..inf} n^3/binomial(2n,n). See A145431
sum_{n=2...infinity} 1/(n* (log n)^3). See A145419
sum_{n=2...infinity} 1/(n* (log n)^4). See A145420
sum_{n=2...infinity} 1/(n* (log n)^5). See A145421
Sum_{n=2..infinity} (-1)^n/(n*log(n)). See A257812
Sum_{n=2..infinity} (-1)^n/log(log(n)), negated. See A257898
Sum_{n=3..infinity} (-1)^n/log(log(log(n))). See A257960
Sum_{n>0} (Fibonacci(n)/(n^n). See A098688
Sum_{n>0} 1/(n!^n!). See A100085
sum_{n>0} 1/(n*prime(n)^n). See A100128
Sum_{n>0} 1/(n^(n!)). See A100084
Sum_{n>0} 1/(n^log(n)). See A099870
Sum_{n>0} 1/prime(n)!. See A100124
Sum_{n>0} n/(2^(n^2)). See A100125
Sum_{n>0} n/(n^n). See A098686
sum_{n>0} n/(prime(n)!). See A100126
sum_{n>0} of (A000040(n+1)-A000040(n))/(2^n), where A000040(k) gives the k-th prime number. See A098882
sum_{n>0} of (A000040(n+1)-A000040(n))/exp(n), where A000040(k) gives the k-th prime number and exp(k) is the natural exponential of k. See A099724
sum_{n>0} of A000040(n)/(2^n), where A000040(k) gives the k-th prime number. See A098990
sum_{n>0} of A000040(n)/exp(n), where A000040(k) gives the k-th prime number and exp(k) is the natural exponential of k. See A098866
sum_{n>0} of n/exp(n). See A098875
sum_{n>0} prime(n)/n!. See A100127
Sum_{n>0} Product_{m=1..n} 1/(Prime(m+1)-Prime(m)). See A099002
Sum_{n>0} Sum_{k=0..n} exp(k)/n! = e*(e^e - 1)/(e - 1). See A252848
Sum_{n>0}(-1/n)^(n-1). See A262974
Sum_{n>=0} 1/((n!)^n). See A261114
sum_{n>=0} 1/(3n+1)^2. See A214550
Sum_{n>=0} 1/(n!)^3. See A271574
Sum_{n>=0} 1/A000032(2*n+1). See A153416
Sum_{n>=0} 1/A000178(n). See A287013
Sum_{n>=0} 1/cosh(n). See A254445
Sum_{n>=0} 1/n!!. See A143280
sum_{n>=0} 2^n/100^A055642(2^n). See A259838
Sum_{n>=0} Fibonacci(n)/n!. See A098689
sum_{n>=0} n^2/e^n = e(1+e)/(e-1)^3. See A255169
Sum_{n>=0} rho(b_n b_{n-1})/2^{n+1}, where b_n are the b-coefficients in Plouffe's constants. See A111953
Sum_{n>=0}(-1)^n/3^(2^n). See A160386
Sum_{n>=1} ((-1)^(n+1))/(n^log(n)). See A099872
sum_{n>=1} (-1)^(n+1)/cuberoot(n). See A251735
Sum_{n>=1} (-1)^(n-1)*n/binomial(2n,n). See A145433
Sum_{n>=1} (-1)^(n-1)*n^2/binomial(2n,n). See A145434
Sum_{n>=1} (-1)^(n-1)/(n^2-1/4)^2. See A145423
Sum_{n>=1} (-1)^floor(n*sqrt(2))/n. See A228639
sum_{n>=1} (-1)^{n-1} (1/n - log(1 + 1/n)) (see Sondow 2005), so in comparison to A001620's sum formula, log(4/Pi) is an "alternating Euler constant." See A094640
Sum_{n>=1} (1-cos(Pi/n)). See A269574
Sum_{n>=1} (2^(n+1) - 3)^n / (n * 3^n * 2^(n^2)). See A293383
Sum_{n>=1} (3^n - 2)^n / (n * 2^n * 3^(n^2)). See A293381
Sum_{n>=1} (A001246(n)*A201546(n)) / (A001025(n)*A010050(n)). See A280630
Sum_{n>=1} (n!/n^n). See A094082
Sum_{n>=1} (Pi/n - sin(Pi/n)). See A269720
sum_{n>=1} (PolyGamma(2, n+1)/n^3) (negated). See A259927
Sum_{n>=1} (sin(Pi/n))^2. See A269611
Sum_{n>=1} -(-1)^n * 2^n / (n * (2*3^n - 1)^n). See A293382
Sum_{n>=1} -(-1)^n * 3^n / (n * 2^n * (3*2^(n-1) - 1)^n). See A293384
Sum_{n>=1} -(-1)^n*(e - (1 + n^(-1))^n). See A114884
Sum_{n>=1} 1/(3^n-1). See A214369
sum_{n>=1} 1/(n*binomial(3*n,n)). See A210453
sum_{n>=1} 1/(n*binomial(4*n,n)). See A225847
sum_{n>=1} 1/(n*binomial(5*n,n)). See A225848
Sum_{n>=1} 1/(n*n!). See A229837
Sum_{n>=1} 1/(n^n+n). See A286193
Sum_{n>=1} 1/(prime(n)*prime(n+1)). See A210473
sum_{n>=1} 1/(prime(n)*prime(n+1)*prime(n+2)): Sum of reciprocals of products of three successive primes. See A242187
Sum_{n>=1} 1/A000032(2*n). See A153415
sum_{n>=1} 1/A033286(n), where A033286(n) = n*prime(n). See A124012
sum_{n>=1} 1/A033286(n)^2. See A253634
Sum_{n>=1} 1/binomial(2n,n). See A073016
Sum_{n>=1} 1/Fibonacci(2*n-1). See A153387
Sum_{n>=1} 1/Fibonacci(2n). See A153386
Sum_{n>=1} 1/n^sqrt(n). See A096253
Sum_{n>=1} 1/sinh(n). See A254446
Sum_{n>=1} A285388(n-1)/A285388(n). See A286127
Sum_{n>=1} arccot(n^2). See A091007
Sum_{n>=1} f(2^n)/2^n, where f(n) is the number of even digits in n. See A096614
Sum_{n>=1} floor(n * tanh(Pi))/10^n is the same as that of 1/81 for the first 268 decimal places [Borwein et al.] See A021085
sum_{n>=1} G_n/n = beta, where numbers G_n are Gregory's coefficients (see A002206 and A002207). See A269330
Sum_{n>=1} H(n)^2/(n+1)^4, where H(n) is the n-th harmonic number. See A260272
Sum_{n>=1} log(n+1)/n!. See A193424
Sum_{n>=1} moebius(n)*(1/10)^n. See A181673
Sum_{n>=1} n!!/n!. See A143280
sum_{n>=1} n!/(3n)!. See A248759
sum_{n>=1} n/sinh(n*Pi). See A240964
Sum_{n>=1} phi(n)/2^n, where phi is Euler's totient function. See A256936
Sum_{n>=1} prime(n)/n^3. See A253358
Sum_{n>=1} prime(n)/n^4. See A253357
Sum_{n>=1} sin((n*Pi)/3)^n. See A277754
Sum_{n>=1} zeta(2n)/(2n)!. See A093721
Sum_{n>=1} Zeta(2n)/n! = 2.40744... See A076813
Sum_{n>=2} ((-1)^n)/(log(n)^n). See A099873
Sum_{n>=2} (-1)^n * Zeta(n)/n!. See A269768
Sum_{n>=2} (-1)^n/log(2*n-1). See A257837
Sum_{n>=2} 1/(n*log(n)^2). See A115563
Sum_{n>=2} 1/A000166(n). See A281682
Sum_{n>=2} 1/n^(n+1). See A135608
sum_{p = primes = A000040} 1/(p*2^p). See A157413
Sum_{p prime} 1/(2^p-1), a prime equivalent of the Erdős-Borwein constant. See A262153
Sum_{p prime} 1/(p(p-1)). See A136141
Sum_{p prime} 1/(p^3 - 1). See A286229
sum_{primes p} 1/(p^2*(p-1)). See A152441
sum_{q = semiprimes = A001358} 1/(q*2^q). See A157414
sum_{q in A001358} log(q)/q^2 over the semiprimes q = 4,6,9,... See A154928
sum_{q in A006881} 1/(q(q-1)) over the squarefree semiprimes q. See A154932
sum_{r in Z}(1/r^2) where Z is the set of all nontrivial zeros r of the Riemann zeta function. See A245275
sum_{r in Z}(1/r^3) where Z is the set of all nontrivial zeros r of the Riemann zeta function. See A245276
Sum_{x=integer, -inf < x < inf} (1/sqrt(2*pi))*exp(-x^2/2). See A133658
Sum_{x>=1} 1/(Pi^x)^(Pi^x). See A134882
Sum_{x>=1} 1/(x^x+1). See A134883
sum{(1/3)^A005652(k): k>=1}. See A191335
sum{(1/3)^A005653(k): k>=1}. See A191334
sum{(1/3)^A191330(k): k>=1}. See A191332
sum{2^(1-n)/F(n) : n >= 1}, where F = A000045 (Fibonacci numbers). See A269991
sum{2^(1-n)/L(n) : n >= 1}, where F = A000032 (Lucas numbers). See A269992
Sum{A000618(n)*2^(-n) : n>=1} See A211705
sum{c(2n) - c(2n-1), n=1,2,...}, where c = convergents to (x = sqrt(2)). See A265293
sum{c(2n) - c(2n-1), n=1,2,...}, where c = convergents to (x = sqrt(3)). See A265296
sum{c(2n) - c(2n-1), n=1,2,...}, where c = convergents to (x = sqrt(5)). See A265299
Sum{c(2n) - x, n=1,2,...}, where c = convergents to (x = golden ratio). See A265289
sum{c(2n) - x, n=1,2,...}, where c = convergents to (x = sqrt(2)). See A265292
sum{c(2n) - x, n=1,2,...}, where c = convergents to (x = sqrt(3)). See A265295
sum{c(2n) - x, n=1,2,...}, where c = convergents to (x = sqrt(5)). See A265298
Sum{k=1..infinity}(1/Prod{j=1..k} j^j’), where n’ is the arithmetic derivative of n. See A190145
Sum{k=1..infinity}(1/Sum{j=1..k} j^j’), where n’ is the arithmetic derivative of n. See A190147
Sum{k=1..infinity}{1/k^sigma(k)} See A192265
Sum{k=2..infinity} (-1)^k/A165559(k). See A209873
Sum{k=2..infinity}(1/Prod{j=2..k} j’), where n’ is the arithmetic derivative of n. See A190144
Sum{k=2..infinity}(1/Sum{j=2..k} j'), where n' is the arithmetic derivative of n. See A190146
sum{n=1..infinity} 1/prime(n)^n. See A093358
sum{n>=1}((-1)^(n+1))*1/F(n) where F(n) is the n-th Fibonacci number A000045(n). See A158933
Sum{p prime>=2} log(p)/(p^2-p+1). See A085609
Sum{r^(-2^k), k >= 0}, where r = golden ratio. See A253271
sum{x - c(2n-1), n=1,2,...}, where c = convergents to (x = golden ratio). See A265288
sum{x - c(2n-1), n=1,2,...}, where c = convergents to (x = sqrt(2)). See A265291
sum{x - c(2n-1), n=1,2,...}, where c = convergents to (x = sqrt(3)). See A265294
sum{x - c(2n-1), n=1,2,...}, where c = convergents to (x = sqrt(5)). See A265297
sum{|x - c(n)|, n=1,2,...}, where c = convergents to (x = golden ratio). See A265290
Sun-to-Earth mass ratio. See A248569
supremum of all real s such that zeta'(s+i*t) = 0 for some real t. See A242070
supremum of all real s such that zeta(s+i*t) = 1 for some real t. See A242069
Sup_{all nonaveraging sequences b(n)} Sum_{k>=1} b(k). See A140577
sup{f(n,1)}, where f(1,x) = x + 1 and thereafter f(n,x) = x + 1 if n is in A000201, else f(n,x) = 1/x. See A245216
sup{f(n,1)}, where f(1,x) = x + 1 and thereafter f(n,x) = x + 1 if n is in A001951, else f(n,x) = 1/x. See A245218
sup{f(n,1)}, where f(1,x) = x + 1 and thereafter f(n,x) = x + 1 if n is in A022838, else f(n,x) = 1/x. See A245221
sup{f(n,1)}, where f(1,x) = x + 1 and thereafter f(n,x) = x + 1 if n is in A054385, else f(n,x) = 1/x. See A245224
surd sqrt(phi - sqrt(phi - sqrt(phi - sqrt(phi - ... )))) where phi is golden ratio = (1 + sqrt(5))/2; see A001622. See A275828
surface area of a 3D sphere with unit volume. See A232808
surface area of a unit Reuleaux triangle See A202473
surface area of an icosidodecahedron with side length 1. See A179451
surface area of gyroelongated pentagonal pyramid with edge length 1. See A179640
surface area of pentagonal cupola with edge length 1. See A179591
surface area of pentagonal pyramid with edge length 1. See A179553
surface area of pentagonal rotunda with edge length 1. See A179637
surface area of square cupola with edge length 1. See A179588
surface area of the convex hull of two orthogonal tangent disks. See A275371
surface area of the Meissner Body. See A137616
surface area of the solid of revolution generated by a Reuleaux triangle rotated around one of its symmetry axes. See A137618
surface area of unit elongated dodecahedron. See A140457
surface index of a regular dodecahedron. See A232810
surface index of a regular icosahedron. See A232809
surface index of a regular octahedron. See A232811
surface index of a regular tetrahedron. See A232812
S_2 = Sum_{n>=0} (2n+1)/((3n+1)^2 (3n+2)^2), a constant related to Quantum Field Theory (see the paper by David Broadhurst). See A274402
s_4, a 4-dimensional Steiner ratio analog. See A272526
t = 1/rho(7) = 2 + rho(7) - rho(7)^2 with rho(7) = 2*cos(2*Pi/7) the length ratio of the smaller diagonal and the side of a regular heptagon. See A160389 for the decimal expansion of rho(7). See A255240

### Start of section T

Takeuchi-Prellberg constant. See A143307
tan 1. See A049471
tan(1/10). See A161019
tan(1/2). See A161011
tan(1/3). See A161012
tan(1/4). See A161013
tan(1/5). See A161014
tan(1/6). See A161015
tan(1/7). See A161016
tan(1/8). See A161017
tan(1/9). See A161018
tan(2*Pi degrees). See A193117
tan(i)/i. See A073744
tan(Pi degrees). (Of course, tan(Pi radians) = 0.) See A051555
tan(Pi/2 degrees). (Of course, tan(Pi/2 radians) = infinity.) See A051559
tan(tan(1)). See A085665
Tangent Euler constant. See A249023
tangent of 1 degree. See A019899
tangent of 10 degrees. See A019908
tangent of 11 degrees. See A019909
tangent of 12 degrees. See A019910
tangent of 13 degrees. See A019911
tangent of 14 degrees. See A019912
tangent of 15 degrees. See A019913
tangent of 16 degrees. See A019914
tangent of 17 degrees. See A019915
tangent of 18 degrees. See A019916
tangent of 19 degrees. See A019917
tangent of 2 degrees. See A019900
tangent of 20 degrees. See A019918
tangent of 21 degrees. See A019919
tangent of 22 degrees. See A019920
tangent of 23 degrees. See A019921
tangent of 24 degrees. See A019922
tangent of 25 degrees. See A019923
tangent of 26 degrees. See A019924
tangent of 27 degrees. See A019925
tangent of 28 degrees. See A019926
tangent of 29 degrees. See A019927
tangent of 3 degrees. See A019901
tangent of 31 degrees. See A019929
tangent of 32 degrees. See A019930
tangent of 33 degrees. See A019931
tangent of 34 degrees. See A019932
tangent of 35 degrees. See A019933
tangent of 36 degrees. See A019934
tangent of 37 degrees. See A019935
tangent of 38 degrees. See A019936
tangent of 39 degrees. See A019937
tangent of 4 degrees. See A019902
tangent of 40 degrees. See A019938
tangent of 41 degrees. See A019939
tangent of 42 degrees. See A019940
tangent of 43 degrees. See A019941
tangent of 44 degrees. See A019942
tangent of 46 degrees. See A019944
tangent of 47 degrees. See A019945
tangent of 48 degrees. See A019946
tangent of 49 degrees. See A019947
tangent of 5 degrees. See A019903
tangent of 50 degrees. See A019948
tangent of 51 degrees. See A019949
tangent of 52 degrees. See A019950
tangent of 53 degrees. See A019951
tangent of 54 degrees. See A019952
tangent of 55 degrees. See A019953
tangent of 56 degrees. See A019954
tangent of 57 degrees. See A019955
tangent of 58 degrees. See A019956
tangent of 59 degrees. See A019957
tangent of 6 degrees. See A019904
tangent of 61 degrees. See A019959
tangent of 62 degrees. See A019960
tangent of 63 degrees. See A019961
tangent of 64 degrees. See A019962
tangent of 65 degrees. See A019963
tangent of 66 degrees. See A019964
tangent of 67 degrees. See A019965
tangent of 68 degrees. See A019966
tangent of 69 degrees. See A019967
tangent of 7 degrees. See A019905
tangent of 70 degrees. See A019968
tangent of 71 degrees. See A019969
tangent of 72 degrees. See A019970
tangent of 73 degrees. See A019971
tangent of 74 degrees. See A019972
tangent of 75 degrees. See A019973
tangent of 76 degrees. See A019974
tangent of 77 degrees. See A019975
tangent of 78 degrees. See A019976
tangent of 79 degrees. See A019977
tangent of 8 degrees. See A019906
tangent of 80 degrees. See A019978
tangent of 81 degrees. See A019979
tangent of 82 degrees. See A019980
tangent of 83 degrees. See A019981
tangent of 84 degrees. See A019982
tangent of 85 degrees. See A019983
tangent of 86 degrees. See A019984
tangent of 87 degrees. See A019985
tangent of 88 degrees. See A019986
tangent of 89 degrees. See A019987
tangent of 9 degrees. See A019907
tanh(1). See A073744
Tanh[EulerGamma]=0.5206... See A147710
tau (Golden ratio): See A001622
tau_2 (so named by S. Finch), the sum of squared eigenvalues of the Ruelle-Mayer linear operator G_2. See A273100
tenth (of 10) decimal selvage number; the n-th digit of a decimal selvage number, x, is equal to the tenths digit of n*x. See A071877
tenth derivative of the infinite power tower function x^x^x... at x = 1/2, negated. See A277531
tenth root of 3. See A246711
Terms of the simple continued fraction of (131+5*sqrt(1429))/182. 3791/33333. See A133368
Terms of the simple continued fraction of 10/(3*sqrt(205)-35). 4390/3333. See A112132
Terms of the simple continued fraction of 13/(sqrt(3363)-49). 416/3333. See A133145
Terms of the simple continued fraction of 158/(19*sqrt(365)-341). 76/101. See A135537
Terms of the simple continued fraction of 163/(4*sqrt(32370)-607). 4614/37037. See A153110
Terms of the simple continued fraction of 163/(4*sqrt(32370)-607). 46140/37037. See A141425
Terms of the simple continued fraction of 19/(2*sqrt(210)-17). 334/3003. See A135265
Terms of the simple continued fraction of 2/[sqrt(70)-8]. 4780/909. See A142702
Terms of the simple continued fraction of 20690/(sqrt(158206085)-10345). 310443797/333333333. See A154629
Terms of the simple continued fraction of 21/[2*sqrt(78)-9]. 2441/10989. See A106253
Terms of the simple continued fraction of 22/(sqrt(4277)-47). 145/909. See A135169
Terms of the simple continued fraction of 29/[2*sqrt(210)-17]. 667/3003. See A144110
Terms of the simple continued fraction of 3/(sqrt(35)-4). 1003/9009. See A130974
Terms of the simple continued fraction of 481/(sqrt(548587)-624). 488/1001. See A146501
Terms of the simple continued fraction of 82/[sqrt(25277)-111]. 3401/30303. See A105899
Terms of the simple continued fraction of 838/[5*(197669)-2059]. 5450/909. See A147818
Terms of the simple continued fraction of 86/(13*sqrt(173)-99). 143/909. See A155158
Terms of the simple continued fraction of 933/(sqrt(5071503)-1611). 18/143. See A154127
tetrahedral angle (in degrees). See A247412
theta = 2.472548..., an auxiliary constant used to compute the best constant in Friedrichs' inequality in one dimension. See A244262
theta = atan((sqrt(10-2*sqrt(5))-2)/(sqrt(5)-1)). See A158241
theta_1, one of the angles associated with the bow-and-arrow configuration used in the 2-arc smallest length problem. See A248413
theta_2, one of the angles associated with the bow-and-arrow configuration used in the 2-arc smallest length problem. See A248414
theta_3(0, exp(-2*Pi)), where theta_3 is the 3rd Jacobi theta function. See A247217
theta_3(0, exp(-3*Pi)), where theta_3 is the 3rd Jacobi theta function. See A273081
theta_3(0, exp(-4*Pi)), where theta_3 is the 3rd Jacobi theta function. See A273082
theta_3(0, exp(-5*Pi)), where theta_3 is the 3rd Jacobi theta function. See A273083
theta_3(0, exp(-6*Pi)), where theta_3 is the 3rd Jacobi theta function. See A273084
theta_3(0, exp(-sqrt(2)*Pi)), where theta_3 is the 3rd Jacobi theta function. See A273087
theta_3(0, exp(-sqrt(6)*Pi)), where theta_3 is the 3rd Jacobi theta function. See A273086
theta_3(5*i/sqrt(5)), an explicit particular value of the cubic theta function theta_3. See A259499
theta_3(7*i/sqrt(7)), an explicit particular value of the cubic theta function theta_3. See A259501
theta_3(i/sqrt(5)), an explicit particular value of the cubic theta function theta_3. See A259498
theta_3(i/sqrt(7)), an explicit particular value of the cubic theta function theta_3. See A259500
third (of 10) decimal selvage numbers; the n-th digit of a decimal selvage number, x, is equal to the tenths digit of n*x. See A071791
third derivative of the infinite power tower function x^x^x... at x = 1/2. See A277524
third Malmsten integral: int_{x=1..infinity} log(log(x))/(1 - x + x^2) dx, negated. See A256128
third negative root of the equation Gamma(x) + Psi(x) = 0, negated. See A268981
third smallest Pisot-Vijayaraghavan number. See A228777
third solution of equation cos(x) cosh(x) = -1. See A076419
third solution of equation cos(x) cosh(x) = 1. See A076416
third solution of equation tan(x) = tanh(x). See A076422
Thue constant. See A074071
time taken by light to travel one astronomical unit in a vacuum, measured in seconds. See A230979
time taken by light to travel one meter in a vacuum, measured in seconds. See A182998
Ti_2(2+sqrt(3)), where Ti_2 is the inverse tangent integral function. See A244929
Ti_2(2-sqrt(3)), where Ti_2 is the inverse tangent integral function. See A244928
topological entropy of a two step random Fibonacci substitution. See A216186
torsional rigidity constant for a right isosceles triangular shaft. See A180314
torsional rigidity constant for a square shaft. See A180309
torsional rigidity constant for an equilateral triangular shaft. See A180317
total area of a standard phugoid. See A285832
total area of Ford circles. See A279037
Toth's constant (or digits of the density of the exponentially squarefree numbers). See A262276
totient constant product(1 + 1/(p^2*(p-1))), p prime >= 2). See A065483
totient constant. See A065484
trace of Gaussian operator. See A074904
trace of the Ruelle-Mayer linear operator G_2. See A242914
transcendental constant in the definition of van der Corput's constant. See A143306
transcendental number arccot((1 + t)/(1 - t)) where t=cot(Pi*sqrt(2)/2) tanh(Pi*sqrt(2)/2). See A091007
transcendental root c used to compute the Zolotarev-Schur constant. See A143296
transcendental solution to round pegs in square holes problem. See A127454
Traveling Salesman constant. See A073008
Triangle with hypotenuse Pi, larger leg e and lesser leg close to Pi/2 (and angle close to 30 deg). Cf. A096437: (Pi^2-e^2)^(1/2). See A106153
triangular number k (values of k see A050759) contains no pair of consecutive equal digits. See A050760
tribonacci constant t, the real root of x^3 - x^2 - x - 1. See A058265
triple integral int {z = 0..1} int {y = 0..1} int {x = 0..1} (x*y*z)^(x*y*z) dx dy dz. See A209059
triple integral int {z = 0..1} int {y = 0..1} int {x = 0..1} 1/(x*y*z)^(x*y*z) dx dy dz. See A209060
triton mass energy equivalent in J. See A254294
triton mass in kg. See A254293
triton mass in u. See A254295
twice the twin primes constant defined in A005597. See A114907
twin prime constant associated with the binary constant in A164292. See A164293
twin prime constant C_2 = Product_{ p prime >= 3 } (1-1/(p-1)^2). See A005597
two times the Catalan constant. See A221209
two-dimensional series sum_{i,j=-infinity..infinity} (-1)^(i+j)/(i^2+(3*j+1)^2). See A242001
t^2, where t is the tribonacci constant A058265. See A276800
t^3, where t is the tribonacci constant A058265. See A276801
t_0, the lower bound of the conjectured first interval [t_0, t_1] where the real part of zeta(1+i*t) is negative. See A246844
t_1, the upper bound of the conjectured first interval [t_0, t_1] where the real part of zeta(1+i*t) is negative. See A246845

### Start of section U

U = Product_{k>=1} (k^(1/(k*(k+1)))), a Khintchine-like limiting constant related to Lüroth's representation of real numbers. See A245254
Ultraradical of e. real x such that x^5 + x = e. See A105171
Ultraradical of phi: decimal expansion of the real x such that x^5 + x = phi. See A105172
ultraradical of Pi: real x such that x^5 + x = Pi. See A105169
unforgeable pattern-free binary word constant, a constant mentioned in A003000. See A242430
uniform exponent of simultaneous approximation of Q-linearly independent triples (1,x,x^3) by rational numbers. See A212695
unimodal analog of golden section with respect to A072176: a=lim A072176(n)/A072176(n+1). See A072223
unique positive real root of the equation x^x = x + 1. See A124930
unique positive root of the equation Gamma(x) + Psi(x) = 0. See A268893
unique positive solution of integral_{0..x} exp(-t^2/2) dt = 1. See A240885
unique positive solution to y^y = (y-1)^(y+1). See A100086
unique real number a>0 such that the real part of li(-a) is zero. See A257821
unique real number x whose Engel expansion is the Fibonacci sequence. See A101689
unique real number x whose Engel expansion is the Lucas sequence. See A101690
unique real root of the Chi function. See A133746
unique real solution of the equation Ei(x)-gamma-log(x) = 1, where Ei is the exponential integral function and gamma the Euler-Mascheroni constant. See A242673
unique root of equation N(-x) = N'(x), where N(x) is a cumulative standard normal distribution function, N'(x) = 1/sqrt( 2*Pi )*exp( -(x^2)/2 ). See A135040
unique solution > 1 of the equation x*log(x)=2(x-1). See A229553
unique solution of the equation sum_(p prime)(1/p^x) = 1, a constant related to the asymptotic evaluation of the number of prime multiplicative compositions. See A243350
unique value of Gram point g_n such that g_n=n. See A114893
universal constant in E(h), the maximum number of essential elements of order h. See A140571
upper bound for the r-values supporting stable period-3 orbits in the logistic equation. See A086179
upper bound of 1/Gamma(x) - x on the unit interval x = [0,1]. See A268895
upper bound of the 4-dimensional simultaneous Diophantine approximation constant. See A244336
upper bound of the 5-dimensional simultaneous Diophantine approximation constant. See A244337
upper bound of the 6-dimensional simultaneous Diophantine approximation constant. See A244338
upper bound on length associated with the bow-and-arrow configuration used in the 2-arc smallest length problem. See A248415
upper bound using Shannon entropy arising in randomly-projected hypercubes. See A143149
upper limit of - 1^(1/1) + 2^(1/2) - 3^(1/3) + ... . See A037077
upper limit of the convergents of the continued fraction [1, -1/2, 1/4, -1/8, ... ]. See A229987
upper limit of the convergents of the continued fraction [1, 1/2, 1/4, 1/8, ... ]. See A229982
upper limit of the convergents of the continued fraction [1, 1/3, 1/9, 1/27, ... ]. See A229986
upper limit of the convergents of the continued fraction [1/2, 1/4, 1/8, ... ]. See A229984
upper limit x such that Integral_{u=0..Pi*x} u*cot(u) du = 0. See A175638

### Start of section V

Vallée constant. See A143302
value at which Planck's radiation function achieves its maximum. See A133838
value of a nonregular continued fraction giving tau/(3*tau-1), where tau is the Prouhet-Thue-Morse constant. See A247950
value of Ahmed's 2nd integral. See A102521
value of d that maximizes the area of a triangle whose angles form an harmonic progression in the ratio 1:1/(1-d):1/(1-2d), whose side length opposite the largest or smallest angle remains constant and for d in the interval [-inf, 0.5] where 1/(1-d) and 1/(1-2d) are always positive. See A176269
value of d that maximizes the expression (1+1/(1-d)+1/(1-2d))*(-1+1/(1-d)+1/(1-2d))*(1-1/(1-d)+1/(1-2d))*(1+1/(1-d)-1/(1-2d)) for d in the interval [-inf, 0.5] where 1/(1-d) and 1/(1-2d) are always positive. See A193180
value of Minkowski's question mark function at 1/Pi. See A119927
value of Minkowski's question mark function at 6/Pi^2. See A119923
value of Minkowski's question mark function at Khinchin's constant (A002210). See A119929
value of Minkowski's question mark function at Levy's constant (Exp[Pi^2/(12*Log[2])], A086702). See A120029
value of Minkowski's question mark function at Pi. See A119925
value of Minkowski's question mark function at the base of the natural logarithm. See A120026
value of Pi*( Euler-Mascheroni + log Pi)/2 . See A175292
value of r corresponding to the onset of the period 16-cycle in the logistic map. See A091517
value of r that maximizes the Brahmagupta expression Sqrt((-1+r+r^2+r^3)(1-r+r^2+r^3)(1+r-r^2+r^3)(1+r+r^2-r^3))/4 See A193211
value of the continued fraction 1/(2+3/(4+5/(6+7/.... See A113014
value of the continued fraction 2+2^2/(2^3+2^4/(2^5+2^6... See A180658
value of the continued fraction constructed from Mersenne primes. See A242072
value of the continued fraction constructed from prime primorials minus 1. See A248585
value of the continued fraction constructed from prime primorials plus 1. See A248584
value of the continued fraction [0; 2, 5, 17, 17, 37, 41, 97, 97, ...], generated with primes of the form a^2 + b^4. See A247858
value of the continued fraction [0; 2, 5, 17, 37, 101, 197, ...], generated with primes of the form n^2 + 1. See A247860
value of the continued fraction [0; 3, 5, 5, 7, 11, 13, 17, 19, ...] generated by twin primes. See A247856
value of the continued fraction [1; 1, 2, 3, 4, 5, ...]. See A247844
value of the Glasser-Oloa integral: Integral_{x=0..Pi/2} x^2/(x^2 + log(2*cos(x))^2) dx. See A127196
value of the maximum of Dawson's integral D_+(x). See A133842
value of the maximum of the Airy function Ai. See A269893
value of unique local maximum of the Riemann-Siegel theta function. See A114865
value of Watson's integral. See A086231
value of x such that K(x) = 2E(x). See A086199
value of x such that the solution y to the equation x^y = y has equal real and imaginary parts. See A277067
value to which Sum_{k>=2} d(k)/prime(k) appears to converge, where d(k)=-1 if p mod 3 = 1, d(k)=+1 if p mod 3 = 2 and d(k)=0 if p mod 3 = 0. See A086241
van der Corput's constant. See A143305
Van der Pauw's constant = Pi/log(2). See A163973
van der Waerden-Ulam binary measure of the composites. See A119524
Var(T_{0,1}), the variance of the "first-passage" time required for an Ornstein-Uhlenbeck process to cross the level 0, given that it started at level 1. See A249449
Var(T_{0,2}), the variance of the "first-passage" time required for an Ornstein-Uhlenbeck process to cross the level 0, given that it started at level 2. See A250721
Var(T_{1,0}), the variance of the "first-passage" time required for an Ornstein-Uhlenbeck process to cross the level 1, given that it started at level 0. See A249445
Var(T_{2,0}), the variance of the "first-passage" time required for an Ornstein-Uhlenbeck process to cross the level 2, given that it started at level 0. See A250720
Vardi constant arising in the Sylvester sequence. See A076393
Varga constant. See A073007
variance associated with the fraction of guests without a napkin in Conway’s napkin problem. See A248789
variance of the degree (valency) of the root of a random rooted tree with n vertices. See A272056
variance of the maximum of a size 4 sample from a normal (0,1) distribution. See A243452
variance of the maximum of a size 5 sample from a normal (0,1) distribution. See A243454
variance of the maximum of a size 6 sample from a normal (0,1) distribution. See A243525
variance of the maximum of a size 7 sample from a normal (0,1) distribution. See A243526
variance of the maximum of a size 8 sample from a normal (0,1) distribution. See A243964
vertex angle A at which A B C-8 omega^3 is a maximum. See A133844
Viggo Brun's constant B, also known as the twin primes Brun's constant B_2: Sum (1/p + 1/q) as (p,q) runs through the twin primes. See A065421
Viswanath's constant. See A078416
volume of a dodecahedron with each edge of unit length. See A102769
volume of a regular ideal hyperbolic 4-simplex. See A243311
volume of a rhombic dodecahedron with edges of unit length. See A239022
volume of an icosahedron with each edge of unit length. See A102208
volume of an icosidodecahedron with edge length 1. See A179450
volume of golden tetrahedron. See A178988
volume of great icosahedron with edge length 1. See A179449
volume of gyroelongated pentagonal pyramid with edge length 1. See A179639
volume of gyroelongated square pyramid with edge length 1. See A179638
volume of one cubic parsec in cubic meters, as defined in 2015. See A293816
volume of pentagonal cupola with edge length 1. See A179590
volume of pentagonal dipyramid with edge length 1. See A179641
volume of pentagonal pyramid with edge length 1. See A179552
volume of pentagonal rotunda with edge length 1. See A179593
volume of small rhombicosidodecahedron with edge = 1. See A185093
volume of square cupola with edge length 1. See A179587
volume of the convex hull of two orthogonal disks in the "two-circle roller" configuration. See A275373
volume of the Lambert cube, allegedly the volume of the smallest, large, Coxeter hyperbolic polyhedron. See A199815
volume of the Meissner Body. See A137615
volume of the Reuleaux tetrahedron. See A102888
volume of the solid of revolution generated by a Reuleaux triangle rotated around one of its symmetry axes. See A137617
volume of the Weeks manifold. See A126774
von Klitzing constant (ohms). See A248510
V_1, a Quantum Field Theory constant related to the coloring of the tetrahedron with one mass. See A274412
V_2A, a Quantum Field Theory constant related to the coloring of the tetrahedron with two masses (adjacent case). See A274413
V_2N, a Quantum Field Theory constant related to the coloring of the tetrahedron with two masses (non-adjacent case). See A274414
V_3L, a Quantum Field Theory constant [negated] related to the coloring of the tetrahedron with three masses (line case). See A274417
V_3S, a Quantum Field Theory constant [negated] related to the coloring of the tetrahedron with three masses (star case). See A274416
V_3T, a Quantum Field Theory constant [negated] related to the coloring of the tetrahedron with three masses (triangle case). See A274415
v_4, where v_n is the smallest, positive, real solution to the equation (v_n)^n = v_n + 1. See A060007
V_4A, a Quantum Field Theory constant [negated] related to the coloring of the tetrahedron with four masses (adjacent case). See A274418
V_4N, a Quantum Field Theory constant [negated] related to the coloring of the tetrahedron with four masses (non-adjacent case). See A274419
V_5, a Quantum Field Theory constant [negated] related to the coloring of the tetrahedron with five masses. See A274420
V_6, a Quantum Field Theory constant [negated] related to the coloring of the tetrahedron with six masses. See A274421
w = lim n -> infinity n*phi -sum(k=1, n, F(k+1)/F(k) ) where phi is the golden ratio and F(k) denotes the k-th Fibonacci number. See A073732
W(log 13)/log 13. See A103560
Wagon's constant: the average "dropping time" of the Collatz (3x+1) iteration. See A122790
Wallis' number, the real root of x^3 - 2*x - 5. See A007493
We know this a priori to be strictly less than the Erdos-Borwein constant, which is the sum of the reciprocals of the Mersenne numbers, and which Erdos (1948) showed to be irrational. A065442 Erdos-Borwein constant Sum_{k=1..inf} 1/(2^k-1). This new constant would also seem to be irrational. See A173898
what appears to be the smallest possible C for which the nearest integer to C^2^n is always prime and starts with 2. See A219177
White House switchboard constant. See A182064
width parameter of Graham's biggest little hexagon. See A111970
Wien displacement law constant. See A081819
Without the leading 0 also the decimal expansion of 2/13. See A021069
Wroblewski's constant arising in nonaveraging sequences. See A140577
Wyler's constant. See A180872
W_3(-1), the average reciprocal distance to the origin in a 3-step random walk in the plane. See A258104

### Start of section X

x = 3*Sum_{n in E} 1/10^n where E is the set of numbers whose base-4 representation consists of only 0s and 1s. See A269707
x in the solution to x^e = e^(-x), where e = exp(1). Also the smallest value of the constant c where there exists a solution to x^c = c^(-x). See A248200
x nearest 0 that satisfies x^2+3x+1=e^x. See A201898
x nearest 0 that satisfies x^2+4x+2=e^x. See A201906
x nearest 0 that satisfies x^2+4x+3=e^x. See A201925
x nearest 0 that satisfies x^2+4x+4=e^x. See A201928
x nearest 0 that satisfies x^2+5x+2=e^x. See A201934
x satisfying 10*x^2-1=cot(x) and 0<x<pi. See A201328
x satisfying 10*x^2=cot(x) and 0<x<pi. See A201337
x satisfying 2*x^2+1=cot(x) and 0<x<pi. See A201290
x satisfying 2*x^2+3=cot(x) and 0<x<pi. See A201291
x satisfying 2*x^2+3=sec(x) and 0<x<pi. See A201531
x satisfying 2*x^2-1=cot(x) and 0<x<pi. See A201320
x satisfying 2*x^2-3=cot(x) and 0<x<pi. See A201394
x satisfying 2*x^2=cot(x) and 0<x<pi. See A201329
x satisfying 3*x^2+1=cot(x) and 0<x<Pi. See A201292
x satisfying 3*x^2+2=cot(x) and 0<x<pi. See A201293
x satisfying 3*x^2+2=sec(x) and 0<x<pi. See A200619
x satisfying 3*x^2-1=cot(x) and 0<x<pi. See A201321
x satisfying 3*x^2-2=cot(x) and 0<x<pi. See A201395
x satisfying 3*x^2=cot(x) and 0<x<pi. See A201330
x satisfying 4*x^2-1=cot(x) and 0<x<pi. See A201322
x satisfying 4*x^2=cot(x) and 0<x<pi. See A201331
x satisfying 5*x^2-1=cot(x) and 0<x<pi. See A201323
x satisfying 5*x^2=cot(x) and 0<x<pi. See A201332
x satisfying 6*x^2-1=cot(x) and 0<x<pi. See A201324
x satisfying 6*x^2=cot(x) and 0<x<pi. See A201333
x satisfying 7*x^2-1=cot(x) and 0<x<pi. See A201325
x satisfying 7*x^2=cot(x) and 0<x<pi. See A201334
x satisfying 8*x^2-1=cot(x) and 0<x<pi. See A201326
x satisfying 8*x^2=cot(x) and 0<x<pi. See A201335
x satisfying 9*x^2-1=cot(x) and 0<x<pi. See A201327
x satisfying 9*x^2=cot(x) and 0<x<pi. See A201336
x satisfying e^x-e^(-2x)=1. See A202537
x satisfying x+2=exp(-x). See A202322
x satisfying x=e^(-2*Pi*x). See A202495
x satisfying x=e^(-2x). See A202498
x satisfying x=e^(-2x-2). See A202497
x satisfying x=e^(-3x). See A202499
x satisfying x=e^(-Pi*x). See A202500
x satisfying x=e^(-Pi*x/2). See A202501
x satisfying x=e^(-x-2). See A202496
x satisfying x=e^(x-2). See A202348
x satisfying x=e^(x-3). See A202494
x satisfying x^2+10=cot(x) and 0<x<pi. See A201289
x satisfying x^2+10=sec(x) and 0<x<pi. See A201405
x satisfying x^2+1=cot(x) and 0<x<pi. See A201280
x satisfying x^2+2=cot(x) and 0<x<pi. See A201281
x satisfying x^2+2=sec(x) and 0<x<pi. See A201397
x satisfying x^2+3=cot(x) and 0<x<pi. See A201282
x satisfying x^2+3=sec(x) and 0<x<pi. See A201398
x satisfying x^2+4=cot(x) and 0<x<pi. See A201283
x satisfying x^2+4=sec(x) and 0<x<pi. See A201399
x satisfying x^2+5=cot(x) and 0<x<Pi. See A201284
x satisfying x^2+5=sec(x) and 0<x<pi. See A201400
x satisfying x^2+6=cot(x) and 0<x<pi. See A201285
x satisfying x^2+6=sec(x) and 0<x<pi. See A201401
x satisfying x^2+7=cot(x) and 0<x<pi. See A201286
x satisfying x^2+7=sec(x) and 0<x<pi. See A201402
x satisfying x^2+8=cot(x) and 0<x<pi. See A201287
x satisfying x^2+8=sec(x) and 0<x<pi. See A201403
x satisfying x^2+9=cot(x) and 0<x<pi. See A201288
x satisfying x^2+9=sec(x) and 0<x<pi. See A201404
x satisfying x^2-10=cot(x) and 0<x<pi. See A201319
x satisfying x^2-1=cot(x) and 0<x<pi. See A201295
x satisfying x^2-2=cot(x) and 0<x<pi. See A201296
x satisfying x^2-3=cot(x) and 0<x<pi. See A201297
x satisfying x^2-4=cot(x) and 0<x<pi. See A201298
x satisfying x^2-5=cot(x) and 0<x<pi. See A201299
x satisfying x^2-6=cot(x) and 0<x<pi. See A201315
x satisfying x^2-7=cot(x) and 0<x<pi. See A201316
x satisfying x^2-8=cot(x) and 0<x<pi. See A201317
x satisfying x^2-9=cot(x) and 0<x<pi. See A201318
x satisfying x^2=cot(x) and 0<x<pi. See A201294
x such that sum(k>=1,x^F(k))= 1 where F(k) denotes the k-th Fibonacci number. See A079591
x such that tan(Pi/x) + sin(Pi/x)*cos(Pi/x) = 2*Pi/x. See A280207
x such that x + x^4 + x^9 + x^16 + x^25 + x^36 + ... = 1. See A272037
x such that x^2 + x^3 + x^5 + x^7 + x^11 + x^13 + x^17 + ... = 1. See A084256
x such that x^x = Pi. See A030437
x such that x^x=3. See A173158
x value of the unique pairwise intersection on (0,1) of distinct order 5 power tower functions with parentheses inserted. See A199814
x with 0 < x < y and x^y = y^x = 17. See A194622
x, where Arithmetic-Geometric Mean of 1 and x = Pi See A191220
x, where x is the smallest number for which floor[x^(2^y)] is prime for every y>0. See A112597
x, where x is the unique number, given floor(x)=0, having the property that the signature sequence of x is equal to the continued fraction expansion of x. See A084823
x-coordinate of fixed point of Henon Map for a=7/5 and b=3/10 where x is a positive. See A140321
x-intercept of the shortest segment from the positive x axis through (2,1) to the line y=x. See A197032
x-intercept of the shortest segment from the x axis through (1,1) to the line y=2x. See A197140
x-intercept of the shortest segment from the x axis through (1,1) to the line y=3x. See A197148
x-intercept of the shortest segment from the x axis through (2,1) to the line y=2x. See A197142
x-intercept of the shortest segment from the x axis through (2,1) to the line y=3x. See A197150
x-intercept of the shortest segment from the x axis through (3,1) to the line y=2x. See A197144
x-intercept of the shortest segment from the x axis through (3,1) to the line y=x. See A197034
x-intercept of the shortest segment from the x axis through (3,1) to the line y=x/2. See A197152
x-intercept of the shortest segment from the x axis through (3,2) to the line y=x. See A197138
x-intercept of the shortest segment from the x axis through (4,1) to the line y=2x. See A197146
x-intercept of the shortest segment from the x axis through (4,1) to the line y=x. See A197136
x-intercept of the shortest segment from the x axis through (4,1) to the line y=x/2. See A197154
x<0 having 2x^2+2x=sin(x). See A198496
x<0 having 4*x^2+2x=sin(x). See A198539
x<0 having 4*x^2+3x=2*sin(x). See A198542
x<0 having 4*x^2+3x=sin(x). See A198541
x<0 having 4*x^2+4x=3*sin(x). See A198545
x<0 having 4*x^2+4x=sin(x). See A198544
x<0 having x^2+x=2*cos(x). See A197809
x<0 having x^2+x=3*cos(x). See A197811
x<0 having x^2+x=4*cos(x). See A197813
x<0 having x^2+x=cos(x). See A197737
x<0 satisfying 2*x+cos(x)=0. See A199621
x<0 satisfying 2*x^2+2*sin(x)=1. See A199067
x<0 satisfying 2*x^2+2*sin(x)=3. See A199069
x<0 satisfying 2*x^2+2*x*cos(x)=1. See A199269
x<0 satisfying 2*x^2+2*x*cos(x)=3. See A199271
x<0 satisfying 2*x^2+2*x*cos(x)=sin(x). See A199625
x<0 satisfying 2*x^2+3*sin(x)=1. See A199071
x<0 satisfying 2*x^2+3*sin(x)=2. See A199073
x<0 satisfying 2*x^2+3*sin(x)=3. See A199075
x<0 satisfying 2*x^2+3*x*cos(x)=1. See A199273
x<0 satisfying 2*x^2+3*x*cos(x)=2. See A199275
x<0 satisfying 2*x^2+3*x*cos(x)=3. See A199277
x<0 satisfying 2*x^2+4x=3*sin(x). See A198612
x<0 satisfying 2*x^2+sin(x)=1. See A199061
x<0 satisfying 2*x^2+sin(x)=2. See A199063
x<0 satisfying 2*x^2+sin(x)=3. See A199065
x<0 satisfying 2*x^2+x*cos(x)=1. See A199188
x<0 satisfying 2*x^2+x*cos(x)=2. See A199265
x<0 satisfying 2*x^2+x*cos(x)=3. See A199267
x<0 satisfying 2x+2=e^x. See A202345
x<0 satisfying 3*x+2*cos(x)=0. See A199666
x<0 satisfying 3*x+cos(x)=0. See A199662
x<0 satisfying 3*x^2+2*sin(x)=1. See A199152
x<0 satisfying 3*x^2+2*sin(x)=2. See A199154
x<0 satisfying 3*x^2+2*sin(x)=3. See A199156
x<0 satisfying 3*x^2+2*x*cos(x)=1. See A199285
x<0 satisfying 3*x^2+2*x*cos(x)=2. See A199287
x<0 satisfying 3*x^2+2*x*cos(x)=3. See A199289
x<0 satisfying 3*x^2+2*x*cos(x)=sin(x). See A199667
x<0 satisfying 3*x^2+2x=sin(x). See A198613
x<0 satisfying 3*x^2+3*sin(x)=1. See A199158
x<0 satisfying 3*x^2+3*sin(x)=2. See A199160
x<0 satisfying 3*x^2+3*x*cos(x)=1. See A199291
x<0 satisfying 3*x^2+3*x*cos(x)=2. See A199293
x<0 satisfying 3*x^2+3x=2*sin(x). See A198617
x<0 satisfying 3*x^2+3x=sin(x). See A198616
x<0 satisfying 3*x^2+4x=2*sin(x). See A198607
x<0 satisfying 3*x^2+4x=3*sin(x). See A198619
x<0 satisfying 3*x^2+4x=sin(x). See A198606
x<0 satisfying 3*x^2+sin(x)=1. See A199060
x<0 satisfying 3*x^2+sin(x)=2. See A199078
x<0 satisfying 3*x^2+sin(x)=3. See A199150
x<0 satisfying 3*x^2+x*cos(x)=1. See A199279
x<0 satisfying 3*x^2+x*cos(x)=2. See A199281
x<0 satisfying 3*x^2+x*cos(x)=3. See A199283
x<0 satisfying x+2=e^x. See A202320
x<0 satisfying x+3=e^x. See A202324
x<0 satisfying x+e=e^x. See A202347
x<0 satisfying x^2+2*sin(x)=1. See A199080
x<0 satisfying x^2+2*sin(x)=2. See A199082
x<0 satisfying x^2+2*sin(x)=3. See A199050
x<0 satisfying x^2+2*x*cos(x)=1. See A199176
x<0 satisfying x^2+2*x*cos(x)=2. See A199178
x<0 satisfying x^2+2*x*cos(x)=3. See A199180
x<0 satisfying x^2+2*x*cos(x)=sin(x). See A199600
x<0 satisfying x^2+3*sin(x)=1. See A199054
x<0 satisfying x^2+3*sin(x)=2. See A199056
x<0 satisfying x^2+3*sin(x)=3. See A199058
x<0 satisfying x^2+3*x*cos(x)=3. See A199186
x<0 satisfying x^2+sin(x)=1. See A198866
x<0 satisfying x^2+sin(x)=2. See A199046
x<0 satisfying x^2+sin(x)=3. See A199048
x<0 satisfying x^2+x*cos(x)=1. See A199170
x<0 satisfying x^2+x*cos(x)=2. See A199172
x<0 satisfying x^2+x*cos(x)=3. See A199174
x>0 having 2*x^2-2x=3*sin(x). See A198559
x>0 having 2*x^2-2x=sin(x). See A198558
x>0 having 2*x^2-x=2*sin(x). See A198547
x>0 having 2*x^2-x=3*sin(x). See A198548
x>0 having 2*x^2-x=4*sin(x). See A198549
x>0 having 2*x^2-x=sin(x). See A198546
x>0 having 2*x^2=3*cos(x). See A198111
x>0 having 2*x^2=cos(x). See A198110
x>0 having 2x^2+2x=sin(x). See A198497
x>0 having 2x^2+x=2*sin(x). See A198493
x>0 having 2x^2+x=3*sin(x). See A198494
x>0 having 2x^2+x=4*sin(x). See A198495
x>0 having 3*x^2+x=2*sin(x). See A198498
x>0 having 3*x^2+x=3*sin(x). See A198499
x>0 having 3*x^2+x=4*sin(x). See A198500
x>0 having 3*x^2-2x=2*sin(x). See A198561
x>0 having 3*x^2-2x=3*sin(x). See A198562
x>0 having 3*x^2-2x=4*sin(x). See A198563
x>0 having 3*x^2-2x=sin(x). See A198560
x>0 having 3*x^2-x=2*sin(x). See A198551
x>0 having 3*x^2-x=3*sin(x). See A198552
x>0 having 3*x^2-x=4*sin(x). See A198553
x>0 having 3*x^2-x=sin(x). See A198550
x>0 having 3*x^2=2*cos(x). See A198212
x>0 having 3*x^2=2*sin(x). See A198502
x>0 having 3*x^2=4*cos(x). See A198213
x>0 having 3*x^2=cos(x). See A198211
x>0 having 3*x^2=sin(x). See A198501
x>0 having 4*x^2+2x=3*sin(x). See A198540
x>0 having 4*x^2+3x=4*sin(x). See A198543
x>0 having 4*x^2+x=2*sin(x). See A198505
x>0 having 4*x^2+x=3*sin(x). See A198506
x>0 having 4*x^2+x=4*sin(x). See A198507
x>0 having 4*x^2-2x=3*sin(x). See A198565
x>0 having 4*x^2-2x=sin(x). See A198564
x>0 having 4*x^2-x=2*sin(x). See A198555
x>0 having 4*x^2-x=3*sin(x). See A198556
x>0 having 4*x^2-x=4*sin(x). See A198557
x>0 having 4*x^2-x=sin(x). See A198554
x>0 having 4*x^2=3*cos(x). See A198348
x>0 having 4*x^2=3*sin(x). See A198504
x>0 having 4*x^2=cos(x). See A198347
x>0 having 4*x^2=sin(x). See A198503
x>0 having x^2+2x=3*sin(x). See A198425
x>0 having x^2+2x=4*sin(x). See A198426
x>0 having x^2+2x=sin(x). See A198424
x>0 having x^2+x=2*cos(x). See A197810
x>0 having x^2+x=2*sin(x). See A198417
x>0 having x^2+x=3*cos(x). See A197812
x>0 having x^2+x=3*sin(x). See A198418
x>0 having x^2+x=4*cos(x). See A197814
x>0 having x^2+x=4*sin(x). See A198419
x>0 having x^2+x=cos(x). See A197738
x>0 having x^2-2x=2*sin(x). See A198428
x>0 having x^2-2x=3*sin(x). See A198429
x>0 having x^2-2x=4*sin(x). See A198430
x>0 having x^2-2x=sin(x). See A198427
x>0 having x^2-3x=2*sin(x). See A198432
x>0 having x^2-3x=3*sin(x). See A198433
x>0 having x^2-3x=4*sin(x). See A198488
x>0 having x^2-3x=sin(x). See A198431
x>0 having x^2-4x=2*sin(x). See A198490
x>0 having x^2-4x=3*sin(x). See A198491
x>0 having x^2-4x=4*sin(x). See A198492
x>0 having x^2-4x=sin(x). See A198489
x>0 having x^2-x=2*sin(x). See A198421
x>0 having x^2-x=3*sin(x). See A198422
x>0 having x^2-x=4*sin(x). See A198423
x>0 having x^2-x=sin(x). See A198420
x>0 having x^2=2*cos(x). See A197806
x>0 having x^2=3*cos(x). See A197807
x>0 having x^2=3*sin(x). See A198415
x>0 having x^2=4*cos(x). See A197808
x>0 having x^2=4*sin(x). See A198416
x>0 satisfying 2*x^2 - 2*x*cos(x) = 3*sin(x). See A199775
x>0 satisfying 2*x^2+2*cos(x)=3. See A198869
x>0 satisfying 2*x^2+2*sin(x)=1. See A199068
x>0 satisfying 2*x^2+2*sin(x)=3. See A199070
x>0 satisfying 2*x^2+2*x*cos(x)=1. See A199270
x>0 satisfying 2*x^2+2*x*cos(x)=3*sin(x). See A199661
x>0 satisfying 2*x^2+2*x*cos(x)=3. See A199272
x>0 satisfying 2*x^2+2*x*sin(x)=1. See A199382
x>0 satisfying 2*x^2+2*x*sin(x)=3*cos(x). See A199442
x>0 satisfying 2*x^2+2*x*sin(x)=3. See A199383
x>0 satisfying 2*x^2+2*x*sin(x)=cos(x). See A199441
x>0 satisfying 2*x^2+3*cos(x)=4. See A198870
x>0 satisfying 2*x^2+3*sin(x)=1. See A199072
x>0 satisfying 2*x^2+3*sin(x)=2. See A199074
x>0 satisfying 2*x^2+3*sin(x)=3. See A199076
x>0 satisfying 2*x^2+3*x*cos(x)=1. See A199274
x>0 satisfying 2*x^2+3*x*cos(x)=2. See A199276
x>0 satisfying 2*x^2+3*x*cos(x)=3. See A199278
x>0 satisfying 2*x^2+3*x*sin(x)=1. See A199384
x>0 satisfying 2*x^2+3*x*sin(x)=2*cos(x). See A199444
x>0 satisfying 2*x^2+3*x*sin(x)=2. See A199385
x>0 satisfying 2*x^2+3*x*sin(x)=3*cos(x). See A199445
x>0 satisfying 2*x^2+3*x*sin(x)=3. See A199386
x>0 satisfying 2*x^2+3*x*sin(x)=cos(x). See A199443
x>0 satisfying 2*x^2+3x=4*sin(x). See A198610
x>0 satisfying 2*x^2+cos(x)=2. See A198820
x>0 satisfying 2*x^2+cos(x)=3. See A198827
x>0 satisfying 2*x^2+cos(x)=4. See A198837
x>0 satisfying 2*x^2+sin(x)=1. See A199062
x>0 satisfying 2*x^2+sin(x)=2. See A199064
x>0 satisfying 2*x^2+sin(x)=3. See A199066
x>0 satisfying 2*x^2+x*cos(x)=1. See A199189
x>0 satisfying 2*x^2+x*cos(x)=2*sin(x). See A199622
x>0 satisfying 2*x^2+x*cos(x)=2. See A199266
x>0 satisfying 2*x^2+x*cos(x)=3*sin(x). See A199623
x>0 satisfying 2*x^2+x*cos(x)=3. See A199268
x>0 satisfying 2*x^2+x*cos(x)=4*sin(x). See A199624
x>0 satisfying 2*x^2+x*sin(x)=1. See A199379
x>0 satisfying 2*x^2+x*sin(x)=2*cos(x). See A199439
x>0 satisfying 2*x^2+x*sin(x)=2. See A199380
x>0 satisfying 2*x^2+x*sin(x)=3*cos(x). See A199440
x>0 satisfying 2*x^2+x*sin(x)=3. See A199381
x>0 satisfying 2*x^2+x*sin(x)=cos(x). See A199438
x>0 satisfying 2*x^2-2*cos(x)=-1. See A198875
x>0 satisfying 2*x^2-2*cos(x)=3. See A198876
x>0 satisfying 2*x^2-2*x*cos(x)=sin(x). See A199776
x>0 satisfying 2*x^2-2*x*sin(x)=3*cos(x). See A199504
x>0 satisfying 2*x^2-2*x*sin(x)=cos(x). See A199503
x>0 satisfying 2*x^2-3*cos(x)=-1. See A198878
x>0 satisfying 2*x^2-3*cos(x)=-2. See A198877
x>0 satisfying 2*x^2-3*cos(x)=1. See A198879
x>0 satisfying 2*x^2-3*cos(x)=2. See A198880
x>0 satisfying 2*x^2-3*cos(x)=3. See A198881
x>0 satisfying 2*x^2-3*cos(x)=4. See A198882
x>0 satisfying 2*x^2-3*x*cos(x)=2*sin(x). See A199779
x>0 satisfying 2*x^2-3*x*cos(x)=3*sin(x). See A199778
x>0 satisfying 2*x^2-3*x*cos(x)=4*sin(x). See A199777
x>0 satisfying 2*x^2-3*x*cos(x)=sin(x). See A199780
x>0 satisfying 2*x^2-3x=2*sin(x). See A198567
x>0 satisfying 2*x^2-3x=3*sin(x). See A198568
x>0 satisfying 2*x^2-3x=4*sin(x). See A198569
x>0 satisfying 2*x^2-3x=sin(x). See A198566
x>0 satisfying 2*x^2-4*cos(x)=-1. See A198884
x>0 satisfying 2*x^2-4*cos(x)=-3. See A198883
x>0 satisfying 2*x^2-4*cos(x)=1. See A198885
x>0 satisfying 2*x^2-4*cos(x)=3. See A198886
x>0 satisfying 2*x^2-4*x*cos(x)=3*sin(x). See A199781
x>0 satisfying 2*x^2-4*x*cos(x)=sin(x). See A199782
x>0 satisfying 2*x^2-4x=3*sin(x). See A198578
x>0 satisfying 2*x^2-4x=sin(x). See A198577
x>0 satisfying 2*x^2-cos(x)=1. See A198871
x>0 satisfying 2*x^2-cos(x)=2. See A198872
x>0 satisfying 2*x^2-cos(x)=3. See A198873
x>0 satisfying 2*x^2-cos(x)=4. See A198874
x>0 satisfying 2*x^2-x*cos(x)=4*sin(x). See A199739
x>0 satisfying 2*x^2-x*sin(x)=2*cos(x). See A199472
x>0 satisfying 2*x^2-x*sin(x)=3*cos(x). See A199473
x>0 satisfying 2*x^2-x*sin(x)=cos(x). See A199471
x>0 satisfying 2*x^2=3*sin(x). See A198605
x>0 satisfying 2*x^2=sin(x). See A198583
x>0 satisfying 2x+1=e^x. See A202343
x>0 satisfying 2x+2=e^x. See A202346
x>0 satisfying 3*x^2+2*cos(x)=3. See A198919
x>0 satisfying 3*x^2+2*cos(x)=4. See A198920
x>0 satisfying 3*x^2+2*sin(x)=1. See A199153
x>0 satisfying 3*x^2+2*sin(x)=2. See A199155
x>0 satisfying 3*x^2+2*sin(x)=3. See A199157
x>0 satisfying 3*x^2+2*x*cos(x)=1. See A199286
x>0 satisfying 3*x^2+2*x*cos(x)=2. See A199288
x>0 satisfying 3*x^2+2*x*cos(x)=3*sin(x). See A199668
x>0 satisfying 3*x^2+2*x*cos(x)=3. See A199290
x>0 satisfying 3*x^2+2*x*cos(x)=4*sin(x). See A199669
x>0 satisfying 3*x^2+2*x*sin(x)=1. See A199390
x>0 satisfying 3*x^2+2*x*sin(x)=2*cos(x). See A199450
x>0 satisfying 3*x^2+2*x*sin(x)=2. See A199391
x>0 satisfying 3*x^2+2*x*sin(x)=3*cos(x). See A199451
x>0 satisfying 3*x^2+2*x*sin(x)=3. See A199392
x>0 satisfying 3*x^2+2*x*sin(x)=cos(x). See A199449
x>0 satisfying 3*x^2+2x=3*sin(x). See A198614
x>0 satisfying 3*x^2+2x=4*sin(x). See A198615
x>0 satisfying 3*x^2+3*cos(x)=4. See A198921
x>0 satisfying 3*x^2+3*sin(x)=1. See A199159
x>0 satisfying 3*x^2+3*sin(x)=2. See A199161
x>0 satisfying 3*x^2+3*x*cos(x)=1. See A199292
x>0 satisfying 3*x^2+3*x*cos(x)=2. See A199294
x>0 satisfying 3*x^2+3*x*sin(x)=1. See A199393
x>0 satisfying 3*x^2+3*x*sin(x)=2*cos(x). See A199453
x>0 satisfying 3*x^2+3*x*sin(x)=2. See A199395
x>0 satisfying 3*x^2+3*x*sin(x)=cos(x). See A199452
x>0 satisfying 3*x^2+3x=4*sin(x). See A198618
x>0 satisfying 3*x^2+cos(x)=2. See A198868
x>0 satisfying 3*x^2+cos(x)=3. See A198917
x>0 satisfying 3*x^2+cos(x)=4. See A198918
x>0 satisfying 3*x^2+sin(x)=1. See A199077
x>0 satisfying 3*x^2+sin(x)=2. See A199079
x>0 satisfying 3*x^2+sin(x)=3. See A199151
x>0 satisfying 3*x^2+x*cos(x)=1. See A199280
x>0 satisfying 3*x^2+x*cos(x)=2*sin(x). See A199663
x>0 satisfying 3*x^2+x*cos(x)=2. See A199282
x>0 satisfying 3*x^2+x*cos(x)=3*sin(x). See A199664
x>0 satisfying 3*x^2+x*cos(x)=3. See A199284
x>0 satisfying 3*x^2+x*cos(x)=4*sin(x). See A199665
x>0 satisfying 3*x^2+x*sin(x)=1. See A199387
x>0 satisfying 3*x^2+x*sin(x)=2*cos(x). See A199447
x>0 satisfying 3*x^2+x*sin(x)=2. See A199388
x>0 satisfying 3*x^2+x*sin(x)=3*cos(x). See A199448
x>0 satisfying 3*x^2+x*sin(x)=3. See A199389
x>0 satisfying 3*x^2+x*sin(x)=cos(x). See A199446
x>0 satisfying 3*x^2-2*cos(x)=-1. See A198927
x>0 satisfying 3*x^2-2*cos(x)=1. See A198928
x>0 satisfying 3*x^2-2*cos(x)=2. See A198929
x>0 satisfying 3*x^2-2*cos(x)=3. See A198930
x>0 satisfying 3*x^2-2*cos(x)=4. See A198931
x>0 satisfying 3*x^2-2*x*cos(x)=2*sin(x). See A199792
x>0 satisfying 3*x^2-2*x*cos(x)=3*sin(x). See A199791
x>0 satisfying 3*x^2-2*x*cos(x)=4*sin(x). See A199790
x>0 satisfying 3*x^2-2*x*cos(x)=sin(x). See A199793
x>0 satisfying 3*x^2-2*x*sin(x)=2*cos(x). See A199509
x>0 satisfying 3*x^2-2*x*sin(x)=3*cos(x). See A199510
x>0 satisfying 3*x^2-2*x*sin(x)=cos(x). See A199508
x>0 satisfying 3*x^2-3*cos(x)=-1. See A198932
x>0 satisfying 3*x^2-3*cos(x)=1. See A198933
x>0 satisfying 3*x^2-3*cos(x)=2. See A198934
x>0 satisfying 3*x^2-3*cos(x)=4. See A198935
x>0 satisfying 3*x^2-3*x*cos(x)=2*sin(x). See A199788
x>0 satisfying 3*x^2-3*x*cos(x)=4*sin(x). See A199787
x>0 satisfying 3*x^2-3*x*cos(x)=sin(x). See A199789
x>0 satisfying 3*x^2-3*x*sin(x)=2*cos(x). See A199513
x>0 satisfying 3*x^2-3*x*sin(x)=cos(x). See A199511
x>0 satisfying 3*x^2-3x=2*sin(x). See A198571
x>0 satisfying 3*x^2-3x=4*sin(x). See A198572
x>0 satisfying 3*x^2-3x=sin(x). See A198570
x>0 satisfying 3*x^2-4*cos(x)=-1. See A198938
x>0 satisfying 3*x^2-4*cos(x)=-2. See A198937
x>0 satisfying 3*x^2-4*cos(x)=-3. See A198936
x>0 satisfying 3*x^2-4*cos(x)=1. See A198939
x>0 satisfying 3*x^2-4*cos(x)=2. See A198940
x>0 satisfying 3*x^2-4*cos(x)=3. See A198941
x>0 satisfying 3*x^2-4*cos(x)=4. See A198942
x>0 satisfying 3*x^2-4*x*cos(x)=-4*sin(x). See A199783
x>0 satisfying 3*x^2-4*x*cos(x)=2*sin(x). See A199785
x>0 satisfying 3*x^2-4*x*cos(x)=3*sin(x). See A199784
x>0 satisfying 3*x^2-4*x*cos(x)=sin(x). See A199786
x>0 satisfying 3*x^2-4x=2*sin(x). See A198580
x>0 satisfying 3*x^2-4x=3*sin(x). See A198581
x>0 satisfying 3*x^2-4x=4*sin(x). See A198582
x>0 satisfying 3*x^2-4x=sin(x). See A198579
x>0 satisfying 3*x^2-cos(x)=1. See A198922
x>0 satisfying 3*x^2-cos(x)=2. See A198924
x>0 satisfying 3*x^2-cos(x)=3. See A198925
x>0 satisfying 3*x^2-cos(x)=4. See A198926
x>0 satisfying 3*x^2-x*cos(x)=2*sin(x). See A199796
x>0 satisfying 3*x^2-x*cos(x)=3*sin(x). See A199795
x>0 satisfying 3*x^2-x*cos(x)=4*sin(x). See A199794
x>0 satisfying 3*x^2-x*cos(x)=sin(x). See A199797
x>0 satisfying 3*x^2-x*sin(x)=2*cos(x). See A199506
x>0 satisfying 3*x^2-x*sin(x)=3*cos(x). See A199507
x>0 satisfying 3*x^2-x*sin(x)=cos(x). See A199505
x>0 satisfying 3x+1=e^x. See A202344
x>0 satisfying 4*x^2+2*cos(x)=3. See A198985
x>0 satisfying 4*x^2+3*cos(x)=4. See A198986
x>0 satisfying 4*x^2+cos(x)=2. See A198923
x>0 satisfying 4*x^2+cos(x)=3. See A198983
x>0 satisfying 4*x^2+cos(x)=4. See A198984
x>0 satisfying 4*x^2-2*cos(x)=-1. See A198991
x>0 satisfying 4*x^2-2*cos(x)=1. See A198992
x>0 satisfying 4*x^2-2*cos(x)=3. See A198993
x>0 satisfying 4*x^2-2*x*cos(x)=3*sin(x). See A199866
x>0 satisfying 4*x^2-2*x*cos(x)=sin(x). See A199867
x>0 satisfying 4*x^2-3*cos(x)=-1. See A198995
x>0 satisfying 4*x^2-3*cos(x)=-2. See A198994
x>0 satisfying 4*x^2-3*cos(x)=1. See A198996
x>0 satisfying 4*x^2-3*cos(x)=2. See A198997
x>0 satisfying 4*x^2-3*cos(x)=3. See A198998
x>0 satisfying 4*x^2-3*cos(x)=4. See A198999
x>0 satisfying 4*x^2-3*x*cos(x)=2*sin(x). See A199870
x>0 satisfying 4*x^2-3*x*cos(x)=3*sin(x). See A199869
x>0 satisfying 4*x^2-3*x*cos(x)=4*sin(x). See A199868
x>0 satisfying 4*x^2-3*x*cos(x)=sin(x). See A199871
x>0 satisfying 4*x^2-3x=2*sin(x). See A198574
x>0 satisfying 4*x^2-3x=3*sin(x). See A198575
x>0 satisfying 4*x^2-3x=4*sin(x). See A198576
x>0 satisfying 4*x^2-3x=sin(x). See A198573
x>0 satisfying 4*x^2-4*cos(x)=-1. See A199001
x>0 satisfying 4*x^2-4*cos(x)=-3. See A199000
x>0 satisfying 4*x^2-4*cos(x)=1. See A199002
x>0 satisfying 4*x^2-4*cos(x)=3. See A199003
x>0 satisfying 4*x^2-4*x*cos(x)=3*sin(x). See A199872
x>0 satisfying 4*x^2-4*x*cos(x)=sin(x). See A199873
x>0 satisfying 4*x^2-cos(x)=1. See A198987
x>0 satisfying 4*x^2-cos(x)=2. See A198988
x>0 satisfying 4*x^2-cos(x)=3. See A198989
x>0 satisfying 4*x^2-cos(x)=4. See A198990
x>0 satisfying 4*x^2-x*cos(x)=2*sin(x). See A199864
x>0 satisfying 4*x^2-x*cos(x)=3*sin(x). See A199863
x>0 satisfying 4*x^2-x*cos(x)=4*sin(x). See A199862
x>0 satisfying 4*x^2-x*cos(x)=sin(x). See A199865
x>0 satisfying ex+1=e^x. See A202350
x>0 satisfying x*cosh(2x)=1. See A201944
x>0 satisfying x*cosh(2x)=2. See A202283
x>0 satisfying x*cosh(3x)=1. See A201945
x>0 satisfying x*cosh(x)=2. See A201939
x>0 satisfying x*cosh(x)=3. See A201943
x>0 satisfying x*sinh(2x)=1. See A202244
x>0 satisfying x*sinh(2x)=2. See A202284
x>0 satisfying x*sinh(3x)=1. See A202245
x>0 satisfying x*sinh(x)=2. See A201946
x>0 satisfying x*sinh(x)=3. See A202243
x>0 satisfying x+2=e^x. See A202321
x>0 satisfying x+3=e^x. See A202325
x>0 satisfying x=2*sin(x). See A199460
x>0 satisfying x^2+2*cos(x)=3. See A198758
x>0 satisfying x^2+2*cos(x)=4. See A198811
x>0 satisfying x^2+2*sin(x)=1. See A199081
x>0 satisfying x^2+2*sin(x)=2. See A199083
x>0 satisfying x^2+2*sin(x)=3. See A199051
x>0 satisfying x^2+2*x*cos(x)=1. See A199177
x>0 satisfying x^2+2*x*cos(x)=2. See A199179
x>0 satisfying x^2+2*x*cos(x)=3*sin(x). See A199601
x>0 satisfying x^2+2*x*cos(x)=3. See A199181
x>0 satisfying x^2+2*x*cos(x)=4*sin(x). See A199602
x>0 satisfying x^2+2*x*sin(x)=1. See A199373
x>0 satisfying x^2+2*x*sin(x)=2*cos(x). See A199433
x>0 satisfying x^2+2*x*sin(x)=2. See A199374
x>0 satisfying x^2+2*x*sin(x)=3*cos(x). See A199434
x>0 satisfying x^2+2*x*sin(x)=3. See A199375
x>0 satisfying x^2+2*x*sin(x)=cos(x). See A199432
x>0 satisfying x^2+3*cos(x)=3. See A198812
x>0 satisfying x^2+3*cos(x)=4. See A198813
x>0 satisfying x^2+3*sin(x)=1. See A199055
x>0 satisfying x^2+3*sin(x)=2. See A199057
x>0 satisfying x^2+3*sin(x)=3. See A199059
x>0 satisfying x^2+3*x*cos(x)=3. See A199187
x>0 satisfying x^2+3*x*sin(x)=1. See A199376
x>0 satisfying x^2+3*x*sin(x)=2*cos(x). See A199436
x>0 satisfying x^2+3*x*sin(x)=2. See A199377
x>0 satisfying x^2+3*x*sin(x)=3*cos(x). See A199437
x>0 satisfying x^2+3*x*sin(x)=3. See A199378
x>0 satisfying x^2+3*x*sin(x)=cos(x). See A199435
x>0 satisfying x^2+4*cos(x)=3. See A198814
x>0 satisfying x^2+4*cos(x)=4. See A198815
x>0 satisfying x^2+cos(x)=2. See A198755
x>0 satisfying x^2+cos(x)=3. See A198756
x>0 satisfying x^2+cos(x)=4. See A198757
x>0 satisfying x^2+sin(x)=1. See A198867
x>0 satisfying x^2+sin(x)=2. See A199047
x>0 satisfying x^2+sin(x)=3. See A199049
x>0 satisfying x^2+x*cos(x)=1. See A199171
x>0 satisfying x^2+x*cos(x)=2. See A199173
x>0 satisfying x^2+x*cos(x)=3*sin(x). See A199598
x>0 satisfying x^2+x*cos(x)=3. See A199175
x>0 satisfying x^2+x*cos(x)=4*sin(x). See A199599
x>0 satisfying x^2+x*cos(x)=sin(x). See A199597
x>0 satisfying x^2+x*sin(x)=1. See A199370
x>0 satisfying x^2+x*sin(x)=2*cos(x). See A199430
x>0 satisfying x^2+x*sin(x)=2. See A199371
x>0 satisfying x^2+x*sin(x)=3*cos(x). See A199431
x>0 satisfying x^2+x*sin(x)=3. See A199372
x>0 satisfying x^2+x*sin(x)=cos(x). See A199429
x>0 satisfying x^2+x=e^(-x). See A201941
x>0 satisfying x^2-1=e^(-x). See A201940
x>0 satisfying x^2-2*cos(x)=-1. See A198825
x>0 satisfying x^2-2*cos(x)=1. See A198821
x>0 satisfying x^2-2*cos(x)=2. See A198822
x>0 satisfying x^2-2*cos(x)=3. See A198823
x>0 satisfying x^2-2*cos(x)=4. See A198824
x>0 satisfying x^2-2*x*cos(x)=2*sin(x). See A199725
x>0 satisfying x^2-2*x*cos(x)=3*sin(x). See A199724
x>0 satisfying x^2-2*x*cos(x)=4*sin(x). See A199723
x>0 satisfying x^2-2*x*cos(x)=sin(x). See A199726
x>0 satisfying x^2-2*x*sin(x)=2*cos(x). See A199462
x>0 satisfying x^2-2*x*sin(x)=3*cos(x). See A199463
x>0 satisfying x^2-2*x*sin(x)=cos(x). See A199461
x>0 satisfying x^2-3*cos(x)=-1. See A198835
x>0 satisfying x^2-3*cos(x)=-2. See A198836
x>0 satisfying x^2-3*cos(x)=1. See A198826
x>0 satisfying x^2-3*cos(x)=2. See A198828
x>0 satisfying x^2-3*cos(x)=3. See A198829
x>0 satisfying x^2-3*cos(x)=4. See A198830
x>0 satisfying x^2-3*x*cos(x)=2*sin(x). See A199729
x>0 satisfying x^2-3*x*cos(x)=3*sin(x). See A199728
x>0 satisfying x^2-3*x*cos(x)=4*sin(x). See A199727
x>0 satisfying x^2-3*x*cos(x)=sin(x). See A199730
x>0 satisfying x^2-3*x*sin(x)=2*cos(x). See A199469
x>0 satisfying x^2-3*x*sin(x)=3*cos(x). See A199470
x>0 satisfying x^2-3*x*sin(x)=cos(x). See A199468
x>0 satisfying x^2-4*cos(x)=-1. See A198842
x>0 satisfying x^2-4*cos(x)=-2. See A198843
x>0 satisfying x^2-4*cos(x)=-3. See A198844
x>0 satisfying x^2-4*cos(x)=1. See A198838
x>0 satisfying x^2-4*cos(x)=2. See A198839
x>0 satisfying x^2-4*cos(x)=3. See A198840
x>0 satisfying x^2-4*cos(x)=4. See A198841
x>0 satisfying x^2-cos(x)=1. See A198816
x>0 satisfying x^2-cos(x)=2. See A198817
x>0 satisfying x^2-cos(x)=3. See A198818
x>0 satisfying x^2-cos(x)=4. See A198819
x>0 satisfying x^2-x*cos(x)=2*sin(x). See A199721
x>0 satisfying x^2-x*cos(x)=2*sin(x). See A199741
x>0 satisfying x^2-x*cos(x)=3*sin(x). See A199720
x>0 satisfying x^2-x*cos(x)=3*sin(x). See A199740
x>0 satisfying x^2-x*cos(x)=4*sin(x). See A199719
x>0 satisfying x^2-x*cos(x)=sin(x). See A199722
x>0 satisfying x^2-x*cos(x)=sin(x). See A199742
x>0 satisfying x^2-x*sin(x)=2*cos(x). See A199455
x>0 satisfying x^2-x*sin(x)=3*cos(x). See A199456
x>0 satisfying x^2-x*sin(x)=cos(x). See A199454
x>0 satisfying x^2=2*sin(x). See A198414
xi = (cos(Pi/5) - 1/2) / (sin(Pi/5) + 1/2) = 0.284079... . See A158934
Xi(1/2) = 0.02297..., the second derivative of the Riemann Xi function at 1/2. See A256591
xi_3 = 5*G, the volume of an ideal hyperbolic cube, where G is Gieseking's constant. See A244345
xo, where P=(xo,yo) is the point nearest O=(0,0) at which a line y=m*x meets the curve y=cos(3x) orthogonally. See A196996
xo, where P=(xo,yo) is the point nearest O=(0,0) at which a line y=m*x meets the curve y=cos(5x/2) orthogonally. See A196998
xo, where P=(xo,yo) is the point nearest O=(0,0) in which a line y=mx meets the curve y=1+cos(x) orthogonally. See A197000
xo, where P=(xo,yo) is the point nearest O=(0,0) in which a line y=mx meets the curve y=cos(x+1) orthogonally; specifically: See A179378
xo, where P=(xo,yo) is the point nearest O=(0,0) in which a line y=mx meets the curve y=cos(x+1/2) orthogonally. See A197010
xo, where P=(xo,yo) is the point nearest O=(0,0) in which a line y=mx meets the curve y=cos(x+pi/3) orthogonally. See A197004
xo, where P=(xo,yo) is the point nearest O=(0,0) in which a line y=mx meets the curve y=cos(x+pi/4) orthogonally. See A197002
xo, where P=(xo,yo) is the point nearest O=(0,0) in which a line y=mx meets the curve y=cos(x+pi/6) orthogonally. See A197006
x^(1/3) * y^(2/3), where x is the constant in A103647 and y is the constant in A238387. See A238388
x^x with x=Pi^Pi. See A202953
x^x^x^x^... when x = 11/10. See A126625
x_0 = sup{x: there exists y with Re(zeta(x+i*y)) = 0}, where zeta(z) = sum(n>0, 1/n^z) is the Riemann zeta function. See A201559
Y = sum(k>2, 1/2^floor(k^log(log(k)))). See A082665
y with 0 < x < y and x^y = y^x = 17. See A194623
y-coordinate of the inflection point of product{1 + x^k, k >= 1} that has maximal x-coordinate. See A257397
y-coordinate of the inflection point of product{1 + x^k, k >= 1} that has minimal x-coordinate. See A257395
y_1, the first of four non-explicit constants recursively derived from Khintchine's [Khinchin's] constant. See A245255
y_126, the [imaginary part of the] first zero of Riemann's zeta function where Gram's law fails. See A240961
y_2, the second of four non-explicit constants recursively derived from Khintchine's [Khinchin's] constant. See A245256
y_3, the third of four non-explicit constants recursively derived from Khintchine's [Khinchin's] constant. See A245257
y_4, the last of four non-explicit constants recursively derived from Khintchine's [Khinchin's] constant. See A245258

### Start of section Z

zero of f(x)=e^(W(x^2)/x)/log x + Ei(-log(W(x^2)/x)). See A181387
zero z in (0,Pi/2) of the function sin(sin(x))/x - cos(cos(x))/x. See A215668
zeta function at 2 of every second prime number. See A282468
zeta(1/2) (negated). See A252245
zeta(0) (negated). See A257549
zeta(0)+2, the coefficient of z^2 in the Laurent expansion of zeta(z) at the origin. See A245273
zeta(1/2) (negated). See A252244
zeta(2), the second derivative of the Riemann zeta function at 2. See A201994
zeta'(-10) (the derivative of Riemann's zeta function at -10). See A266261
zeta'(-11) (the derivative of Riemann's zeta function at -11) (negated). See A266262
zeta'(-12) (the derivative of Riemann's zeta function at -12). See A266263
zeta'(-13) (the derivative of Riemann's zeta function at -13). See A260660
zeta'(-14) (the derivative of Riemann's zeta function at -14). See A266264
zeta'(-15) (the derivative of Riemann's zeta function at -15). See A266270
zeta'(-16) (the derivative of Riemann's zeta function at -16). See A266271
zeta'(-17) (the derivative of Riemann's zeta function at -17). See A266272
zeta'(-18) (the derivative of Riemann's zeta function at -18) (negated). See A266273
zeta'(-19) (the derivative of Riemann's zeta function at -19) (negated). See A266274
zeta'(-2) (the derivative of Riemann's zeta function at -2). See A240966
zeta'(-20) (the derivative of Riemann's zeta function at -20). See A266275
zeta'(-3) (the derivative of Riemann's zeta function at -3). See A259068
zeta'(-4) (the derivative of Riemann's zeta function at -4). See A259069
zeta'(-5) (the derivative of Riemann's zeta function at -5) (negated). See A259070
zeta'(-6) (the derivative of Riemann's zeta function at -6) (negated). See A259071
zeta'(-7) (the derivative of Riemann's zeta function at -7) (negated). See A259072
zeta'(-8) (the derivative of Riemann's zeta function at -8). See A259073
zeta'(-9) (the derivative of Riemann's zeta function at -9). See A266260
zeta'(0)/zeta(0). See A061444
zeta'(0,1), where zeta(s,1) is a multivariate zeta function. See A190643
zeta'(0,1,1), where zeta(s,1,1) is a multivariate zeta function. See A189272
zeta'(1/2)/zeta(1/2). See A074758
zeta(1/(1-Gamma)). See A091559
zeta(1/2) (negated). See A059750
zeta(10). See A013668
zeta(11). See A013669
zeta(12). See A013670
zeta(13). See A013671
zeta(14). See A013672
zeta(15). See A013673
zeta(16). See A013674
zeta(17). See A013675
zeta(18). See A013676
zeta(19). See A013677
zeta(2) = Pi^2/6. See A013661
zeta(2)*zeta(3)*zeta(4)*... See A021002
zeta(2)*zeta(3), the product of two Riemann zeta values. See A183699
zeta(2)*zeta(3)/zeta(6). See A082695
zeta(2)*zeta(4)*...*zeta(2k)*... See A080729
zeta(2)/exp(gamma), gamma being the Euler-Mascheroni constant. See A246499
zeta(20). See A013678
zeta(21). See A293904
zeta(3) = Sum_{m>=1} 1/m^3. See A002117
zeta(3)*zeta(4), the product of two Riemann zeta values. See A183700
zeta(3)*zeta(5)*zeta(7)*...*zeta(2k+1)*... See A080730
zeta(3)/8. See A276712
Zeta(3)/Pi^3. See A276120
zeta(3)/zeta(2). See A253905
Zeta(3)/Zeta(6). See A157289
Zeta(3)/Zeta(9). See A157293
zeta(3/2). See A078434
zeta(3/2)^(2/3). See A178856
zeta(4). See A013662
zeta(5). See A013663
Zeta(5)/Zeta(10). See A157291
zeta(5/2). See A247041
zeta(6). See A013664
zeta(6)/zeta(2)/zeta(3). See A068468
zeta(7). See A013665
zeta(7/2). See A261804
zeta(8). See A013666
zeta(9). See A013667
Zeta(e). See A110984
zeta(Gamma). See A091557
zeta(Gamma^2). See A091558
Zeta(Phi). See A110985
zeta(Pi). See A068469
Zeta(Zeta(10)). See A110993
zeta(zeta(2)). See A292191
Zeta(Zeta(3)). See A110986
Zeta(Zeta(4)). See A110987
Zeta(Zeta(5)). See A110988
Zeta(Zeta(6)). See A110989
Zeta(Zeta(7)). See A110990
Zeta(Zeta(8)). See A110991
Zeta(Zeta(9)). See A110992
Zeta[2,1/3] - 2*Pi^2/3. See A173973
Zolotarev-Schur constant. See A143295
z^(-3)+z^(-2)+z^(-1)+1+z+z^2+z^3, where z = exp(2*Pi*I/23). See A147776
z_(3-12-12), the bulk limit of the number of spanning trees on a 3-12-12 lattice. See A245740
z_br = z_4.8.8, the bulk limit of the number of spanning trees on a "bathroom" lattice (squares and octagons). See A245736
z_c = phi^5 (where phi is the golden ratio), a lattice statistics constant which is the exact value of the critical activity of the hard hexagon model. See A244593
z_hc, the bulk limit of the number of spanning trees on a honeycomb lattice. See A245737
z_kag, the bulk limit of the number of spanning trees on a kagomé lattice. See A245739
z_tri, a constant related to the enumeration of spanning trees on the triangular lattice (this is different from A242968). See A245725
z_UJ, the bulk limit of the number of spanning trees on a Union Jack lattice. See A245741

### Start of section "brackets", etc.

[3, 3, ...] = (3 + sqrt(13))/2. See A098316
[5, 5, ...] = (5 + sqrt(29))/2. See A098318
[negated] abscissa of the Gamma function local maximum in the interval [-5,-4]. See A256682
[negated] abscissa of the Gamma function local maximum in the interval [-7,-6]. See A256684
[negated] abscissa of the Gamma function local maximum in the interval [-9,-8]. See A256686
[negated] abscissa of the Gamma function local minimum in the interval [-10,-9]. See A256687
[negated] abscissa of the Gamma function local minimum in the interval [-4,-3]. See A256681
[negated] abscissa of the Gamma function local minimum in the interval [-6,-5]. See A256683
[negated] abscissa of the Gamma function local minimum in the interval [-8,-7]. See A256685
[negated] location of the maximum of the Airy function Ai. See A269892
[phi, phi, ...] = (phi + sqrt[phi^2 + 4])/2. See A136319