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A037964
Binomial(4*n,2*n)/2-(-1)^n*binomial(2*n,n)/2.
+0
3
0, 4, 32, 472, 6400, 92504, 1351616, 20060016, 300533760, 4537591960, 68923172032, 1052049834576, 16123800489472, 247959271674352, 3824345280321920, 59132290859989472, 916312070170755072
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.
AT&T Labs Research
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