A071727 - OEIS

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A071727

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

1, 2, 5, 15, 45, 141, 457, 1520, 5159, 17797, 62218, 219946, 784890, 2823666, 10229733, 37289210, 136665195, 503301525, 1861550310, 6912114330, 25755891510, 96279420870, 360961760250, 1356920443944, 5113523451462

(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: A232208 A294502 A254534 * A148354 A364330 A151279

Adjacent sequences: A071724 A071725 A071726 * A071728 A071729 A071730

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 06 2002

STATUS

approved