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A071739
Expansion of (1+x^3*C^4)*C^2, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.
0
1, 2, 5, 15, 48, 159, 539, 1859, 6500, 22984, 82042, 295222, 1069776, 3900225, 14296455, 52656315, 194777340, 723281460, 2695246950, 10075695330, 37776123840, 142010723790, 535172997294, 2021412800430, 7651226309768
OFFSET
0,2
CROSSREFS
Sequence in context: A321467 A301994 A289589 * A268407 A261003 A365268
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jun 06 2002
STATUS
approved