A071728 Expansion of (1+x^3*C)*C^3, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.

1, 3, 9, 29, 94, 311, 1049, 3597, 12506, 43992, 156298, 560082, 2021980, 7347281, 26851465, 98633085, 363961890, 1348553940, 5015206350, 18714132390, 70045890660, 262915076190, 989394563274, 3732136740498, 14109191590724

Offset

0,2

Links

Table of n, a(n) for n=0..24.

Crossrefs

Sequence in context: A061534 A300044 A356937 * A036550 A290897 A289448

Adjacent sequences: A071725 A071726 A071727 * A071729 A071730 A071731

Keyword

nonn

Author

N. J. A. Sloane, Jun 06 2002

Status

approved