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A163086
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Product of first n terms of A163085.
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2
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1, 1, 2, 24, 1728, 3732480, 161243136000, 975198486528000000, 412860031256494080000000000, 110116706384632080236544000000000000000, 7401233839469056679744633202278400000000000000000000
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OFFSET
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0,3
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LINKS
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FORMULA
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MAPLE
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a := proc(n) local i; mul(A163085(i), i=0..n) end;
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MATHEMATICA
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b[0] = 1; b[n_] := b[n] = b[n-1] n! / Floor[n/2]!^2;
a[n_] := Product[b[k], {k, 0, n}];
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PROG
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(Sage)
swing = lambda n: factorial(n)/factorial(n//2)^2
return mul(swing(i+1)^(n-i) for i in (0..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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