A071733 Expansion of (1+x^3*C^2)*C^4, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.

1, 4, 14, 49, 171, 599, 2112, 7501, 26832, 96628, 350132, 1275850, 4672841, 17193765, 63531060, 235647765, 877118340, 3275236800, 12266009940, 46061604510, 173404343190, 654313080174, 2474251490448, 9374968922354

Offset

0,2

Links

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

Crossrefs

Cf. A000108.

Sequence in context: A110686 A071729 A278692 * A291384 A010904 A277084

Adjacent sequences: A071730 A071731 A071732 * A071734 A071735 A071736

Keyword

nonn

Author

N. J. A. Sloane, Jun 06 2002

Status

approved