OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..700
J. Noonan and D. Zeilberger, The Goulden-Jackson cluster method: extensions, applications and implementations, arXiv:math/9806036 [math.CO], 1998.
Index entries for linear recurrences with constant coefficients, signature (26,-1,26,-2).
MATHEMATICA
CoefficientList[Series[(1 + x^2)/(1 - 26*x + x^2 - 26*x^3 + 2*x^4), {x, 0, 30}], x] (* Vincenzo Librandi, Dec 09 2012 *)
PROG
(Maxima) makelist(coeff(taylor((1+x^2)/(1-26*x+x^2-26*x^3+2*x^4), x, 0, n), x, n), n, 0, 19); /* Bruno Berselli, Jun 05 2011 */
(PARI) Vec((1+x^2)/(1-26*x+x^2-26*x^3+2*x^4)+O(x^99)) \\ Charles R Greathouse IV, Jun 05, 2011
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Apr 08 2011
STATUS
approved