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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
OFFSET
0,3
LINKS
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
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 15 2014
STATUS
approved