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A015030 q-Catalan numbers (binomial version) for q=2. 0
1, 1, 5, 93, 6477, 1733677, 1816333805, 7526310334829, 124031223014725741, 8152285307423733458541, 2140200604371078953284092525, 2245805993494514875022552272042605 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

FORMULA

{1 / (n+1)_q} {2 n choose n}_q.

CROSSREFS

Sequence in context: A205344 A000365 A012784 * A136097 A047052 A049662

Adjacent sequences:  A015027 A015028 A015029 * A015031 A015032 A015033

KEYWORD

nonn,easy

AUTHOR

Olivier Gerard (olivier.gerard(AT)gmail.com)

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Last modified February 17 09:06 EST 2012. Contains 205999 sequences.