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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. 0
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

CROSSREFS

Sequence in context: A024964 A061534 A300044 * A036550 A290897 A289448

Adjacent sequences:  A071725 A071726 A071727 * A071729 A071730 A071731

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 06 2002

STATUS

approved

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Last modified June 26 14:05 EDT 2022. Contains 354884 sequences. (Running on oeis4.)