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A134370
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a(n) = ((2n+1)!)^(n+2).
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5
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1, 216, 207360000, 3252016064102400000, 2283380023591730815784976384000000, 161469323688736156802100136913438716723200000000000000, 2260697901194635682690248130915498742378267539496871953338204160000000000000000
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OFFSET
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0,2
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LINKS
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FORMULA
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a(n) ~ 2^(2*(n+1)*(n+2)) * exp(13/24 - 2*n*(n+2)) * n^((n+2)*(4*n+3)/2) * Pi^(n/2 + 1). - Vaclav Kotesovec, Oct 26 2017
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MATHEMATICA
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Table[((2n+1)!)^(n + 2), {n, 0, 10}]
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CROSSREFS
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Cf. A000142, A001044, A000442, A036740, A134366, A134367, A134368, A134369, A134371, A134374, A134375.
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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