

A017641


a(n) = 12n + 10.


7



10, 22, 34, 46, 58, 70, 82, 94, 106, 118, 130, 142, 154, 166, 178, 190, 202, 214, 226, 238, 250, 262, 274, 286, 298, 310, 322, 334, 346, 358, 370, 382, 394, 406, 418, 430, 442, 454, 466, 478, 490, 502, 514, 526, 538, 550, 562, 574, 586, 598, 610, 622, 634
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OFFSET

0,1


COMMENTS

Exponents e such that x^e + x^2  1 is reducible.
If Y is a 4subset of an (2n+1)set X then, for n>=3, a(n2) is the number of 3subsets of X having at least two elements in common with Y.  Milan Janjic, Dec 16 2007


LINKS

Table of n, a(n) for n=0..52.
Tanya Khovanova, Recursive Sequences
Index entries for linear recurrences with constant coefficients, signature (2,1).


FORMULA

A030132(a(n)) = 9.  Reinhard Zumkeller, Jul 04 2007
a(n) = 24*n  a(n1) + 8, (with a(0)=10).  Vincenzo Librandi, Dec 24 2010


MATHEMATICA

Range[10, 1000, 12] (* Vladimir Joseph Stephan Orlovsky, May 29 2011 *)


PROG

(Sage) [i+10 for i in range(527) if gcd(i, 12) == 12] # Zerinvary Lajos, May 21 2009
(PARI) a(n)=12*n+10 \\ Charles R Greathouse IV, Jul 10 2016


CROSSREFS

Cf. A008594, A017533, A017545, A017593.
Sequence in context: A053361 A214153 A179887 * A232540 A217573 A276626
Adjacent sequences: A017638 A017639 A017640 * A017642 A017643 A017644


KEYWORD

nonn,easy


AUTHOR

N. J. A. Sloane


STATUS

approved



