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A126446
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Column 0 of triangle A126445; a(n) = C( C(n+2,3), n).
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7
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1, 1, 6, 120, 4845, 324632, 32468436, 4529365776, 840261910995, 200063149171380, 59473554359599446, 21592914273609648996, 9403538945961296957821, 4838670732821812768919800, 2904538537066424425438417800
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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PROG
| (PARI) a(n)=binomial(n*(n+1)*(n+2)/3!, n)
(Other) sage: [(binomial(binomial(n+3, n), n+1)) for n in xrange(-1, 12)] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Nov 30 2009]
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CROSSREFS
| Cf. A126445; A126447, A126448, A126449; A126451, A126455, A126458.
Sequence in context: A029697 A196688 A126448 * A057003 A096718 A096720
Adjacent sequences: A126443 A126444 A126445 * A126447 A126448 A126449
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KEYWORD
| nonn
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AUTHOR
| Paul D. Hanna (pauldhanna(AT)juno.com), Dec 27 2006
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