This site is supported by donations to The OEIS Foundation.

 Annual Appeal: Please make a donation to keep the OEIS running. In 2018 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS"). Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A193713 Decimal expansion of 11*Pi^5/1440. 2
 2, 3, 3, 7, 6, 5, 0, 3, 6, 9, 8, 8, 7, 5, 6, 6, 6, 5, 6, 8, 6, 8, 1, 6, 2, 7, 8, 5, 0, 5, 4, 0, 2, 1, 9, 9, 3, 9, 4, 6, 7, 4, 1, 5, 0, 8, 9, 6, 4, 4, 6, 1, 7, 3, 3, 3, 9, 4, 7, 3, 3, 9, 4, 4, 8, 2, 5, 4, 0, 6, 1, 8, 9, 9, 0, 9, 5, 5, 1, 5, 7, 5, 9, 3, 3, 0, 6, 8, 4, 0, 6, 3, 9, 4, 8, 3, 0, 7, 6, 9, 4, 0, 5, 8, 4 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The value of integral {x=0..Pi/2} x^2*(log(2*cosx))^2 dx. The absolute value of (d^2/db^2(d^2/da^2(integral {x=0..Pi/2} cos(ax)*(2cos(x))^b dx. The value of Pi/2*(d^2/db^2(d^2/da^2(gamma(b+1)/gamma((b+a)/2+1)/gamma((b-a)/2+1)))) at a=0 and b=0. [Seiichi Kirikami and Peter J. C. Moses] REFERENCES I. S. Gradshteyn and I. M. Ryzhik, Table of Integrals, Series and Products, 4th edition, 3.631.9 LINKS Jonathan Sondow and Eric W. Weisstein Harmonic Number (22) FORMULA Equals 11*A092731/1440 EXAMPLE 2.3376503698875666568... MATHEMATICA RealDigits[ N[11 Pi^5/1440, 150]][[1]] CROSSREFS Cf. A152584, A193712, A194655. Sequence in context: A063670 A253357 A185909 * A171824 A143444 A108346 Adjacent sequences:  A193710 A193711 A193712 * A193714 A193715 A193716 KEYWORD cons,easy,nonn AUTHOR Seiichi Kirikami, Aug 31 2011 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 12 07:03 EST 2018. Contains 318052 sequences. (Running on oeis4.)