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A072331
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a(n) = 2^(n-1)*sum(k=0,n,(n+k)!/(n-k)!/k!).
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0
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3, 38, 772, 21768, 786736, 34703456, 1807726656, 108602413184, 7392195003136, 562241229891072, 47257832090862592, 4349969517278922752, 435185983056255725568, 47017486048144734052352
(list; graph; refs; listen; history; internal format)
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