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A127488
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a(n) = (n^2)!/(2*(n!)).
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0
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OFFSET
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2,1
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LINKS
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FORMULA
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a(n) ~ n^(2*n^2 - n + 1/2) / (2 * exp(n*(n-1))). - Vaclav Kotesovec, Oct 26 2017
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MATHEMATICA
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Table[(n^2)!/(2(n!)), {n, 2, 6}]
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CROSSREFS
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Cf. A000142, A001044, A000442, A036740, A010050, A009445, A134366, A134367, A134368, A134369, A134371, A134372, A134373, A134374, A134374
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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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