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A071726 Expansion of (1+x^3*C)*C, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108. 2
1, 1, 2, 6, 16, 47, 146, 471, 1562, 5291, 18226, 63648, 224808, 801686, 2882452, 10437745, 38032110, 139339635, 512996370, 1896907980, 7041759120, 26233530210, 98046684060, 367525880670, 1381386710964, 5205006015102 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

CROSSREFS

Sequence in context: A003291 A148442 A190729 * A148443 A148444 A064190

Adjacent sequences:  A071723 A071724 A071725 * A071727 A071728 A071729

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Jun 06 2002

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Last modified February 16 06:08 EST 2012. Contains 205860 sequences.