A071735 Expansion of (1+x^3*C^3)*C^2, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.

1, 2, 5, 15, 47, 152, 504, 1705, 5863, 20436, 72046, 256462, 920550, 3328192, 12109270, 44305245, 162911415, 601700700, 2231255070, 8304089970, 31007435970, 116130446640, 436137803400, 1642112017338, 6197239974582

Offset

0,2

Links

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

Crossrefs

First differences of A000782.

Sequence in context: A287275 A151280 A149914 * A148363 A365267 A350434

Adjacent sequences: A071732 A071733 A071734 * A071736 A071737 A071738

Keyword

nonn

Author

N. J. A. Sloane, Jun 06 2002

Status

approved