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A126455
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Column 0 of triangle A126454; a(n) = C( C(n+2,3) + 2, n).
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5
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1, 3, 15, 220, 7315, 435897, 40475358, 5373200880, 962889794295, 223581013518060, 65230517839369311, 23345156728397937888, 10052806195411162278095, 5126493560257678027274800
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OFFSET
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0,2
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LINKS
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MATHEMATICA
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Table[Binomial[Binomial[n+2, 3]+2, n], {n, 0, 20}] (* Harvey P. Dale, Dec 08 2018 *)
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PROG
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(PARI) a(n)=binomial(n*(n+1)*(n+2)/3!+2, n)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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