A250103 Expansion of (1+x)/(1+x-2*x^2-3*x^3).

1, 0, 2, 1, 3, 5, 4, 15, 8, 34, 27, 65, 91, 120, 257, 256, 618, 665, 1339, 1845, 2828, 4879, 6312, 11930, 15331, 27465, 38987, 61936, 98433, 142400, 240274, 339825, 567923, 832549, 1322772, 2046095, 3097096, 4963410, 7369067, 11849041, 17779323, 28025960, 43079809, 66310080, 103927418

Offset

0,3

Links

Table of n, a(n) for n=0..44.

Ira M. Gessel, Rational Functions With Nonnegative Integer Coefficients, slides, 50th Séminaire Lotharingien de Combinatoire, 2003.

Index entries for linear recurrences with constant coefficients, signature (-1, 2, 3).

Prog

(PARI) Vec((1+x)/(1+x-2*x^2-3*x^3) + O(x^50)) \\ Michel Marcus, Aug 28 2015

Crossrefs

Sequence in context: A181094 A282666 A181560 * A063705 A184250 A330411

Adjacent sequences: A250100 A250101 A250102 * A250104 A250105 A250106

Keyword

nonn

Author

N. J. A. Sloane, Nov 15 2014

Status

approved