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Search: id:A073530
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| A073530 |
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a(0) = 1; for n>0 a(n)=sum(binomial(n,k)*binomial(n+k,k+1)*binomial(n+k,k),k=0..n)/n. |
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3
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| 1, 3, 22, 225, 2706, 35861, 507060, 7510005, 115175530, 1815002145, 29231242206, 479251119815, 7975209124260, 134398986236625, 2289535943534920, 39370761619959165, 682603570436824602, 11921040322642855193
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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Special values of the hypergeometric function 3F2, in Maple notation: a(n)=hypergeom([n+1, n+1, -n], [1, 2], -1), n=0, 1...
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CROSSREFS
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Cf. A074635, A074649.
Sequence in context: A001409 A079489 A141152 this_sequence A120667 A042703 A141356
Adjacent sequences: A073527 A073528 A073529 this_sequence A073531 A073532 A073533
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KEYWORD
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nonn
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AUTHOR
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Karol A. Penson (penson(AT)lptl.jussieu.fr), Aug 29 2002
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