A071747 - OEIS

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A071747

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

1

1, 2, 5, 14, 43, 136, 443, 1478, 5027, 17368, 60788, 215084, 768094, 2764880, 10021721, 36546310, 133990755, 493606680, 1826192640, 6782469540, 25278252810, 94512157680, 354397639830, 1332454176924, 5022040887822

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

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

CROSSREFS

First differences of A067294.

Sequence in context: A061058 A060795 A071743 * A071751 A052301 A071755

Adjacent sequences: A071744 A071745 A071746 * A071748 A071749 A071750

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 06 2002

STATUS

approved