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A119574
Binomial(2*n,n)*(n+2)^2/(n+1).
+0
1
4, 9, 32, 125, 504, 2058, 8448, 34749, 143000, 588302, 2418624, 9934834, 40770352, 167152500, 684656640, 2801810205, 11455885080, 46801769190, 191055480000, 779363066790, 3177034283280, 12942655253580, 52693956656640
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.
AT&T Labs Research
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