A071745 Expansion of (1+x^4*C)*C^4, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.

1, 4, 14, 48, 166, 577, 2022, 7147, 25469, 91441, 330516, 1201900, 4394415, 16145630, 59583202, 220763545, 820933365, 3062860665, 11462088180, 43014021480, 161834455920, 610326088974, 2306785989804, 8736538458998

Offset

0,2

Links

Table of n, a(n) for n=0..23.

Crossrefs

Sequence in context: A099376 A002057 A047048 * A071749 A071753 A071757

Adjacent sequences: A071742 A071743 A071744 * A071746 A071747 A071748

Keyword

nonn

Author

N. J. A. Sloane, Jun 06 2002

Status

approved