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A250103 Expansion of (1+x)/(1+x-2*x^2-3*x^3). 0
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 (list; graph; refs; listen; history; text; internal format)
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.

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

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Last modified October 20 07:41 EDT 2020. Contains 337897 sequences. (Running on oeis4.)