A071743 - OEIS

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A071743

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

1, 2, 5, 14, 43, 135, 438, 1458, 4952, 17093, 59787, 211444, 754834, 2716430, 9844071, 35892558, 131576330, 484659105, 1792926015, 6658407540, 24814260930, 92772188130, 347856470880, 1307806293924, 4928962698072

(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: A063545 A061058 A060795 * A071747 A071751 A052301

Adjacent sequences: A071740 A071741 A071742 * A071744 A071745 A071746

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 06 2002

STATUS

approved