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A272237
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a(n) = Product_{k=0..n} (n^2+k)^k.
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3
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2, 180, 2090880, 6044699520000, 7151106328088486400000, 5159620144413185246982598164480000, 3167269298042065159436486399933762922086400000000, 2200712918907364598767850489247066133407004510957047455416320000000
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OFFSET
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1,1
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LINKS
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FORMULA
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a(n) = ((n^2+n)!)^(n+1) / A272238(n).
a(n) ~ exp(n/3 + 3/8) * n^(n*(n+1)).
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MATHEMATICA
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Table[Product[(n^2+k)^k, {k, 0, n}], {n, 1, 10}]
Table[((n^2+n)!)^(n+1) * BarnesG[n^2 + 1] / BarnesG[n^2 + n + 2], {n, 1, 10}]
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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