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

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