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A022625
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Expansion of Product_{m>=1} (1+q^m)^(-30).
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2
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1, -30, 435, -4090, 28305, -155586, 716910, -2884080, 10440930, -34752790, 107952705, -316326840, 881621260, -2352438330, 6041102175, -14993771926, 36092874960, -84513784620, 192981056950, -430636738770, 940848408276
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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) ~ (-1)^n * 5^(1/4) * exp(Pi*sqrt(5*n)) / (2^(3/2) * n^(3/4)). - Vaclav Kotesovec, Aug 27 2015
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MATHEMATICA
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nmax = 50; CoefficientList[Series[Product[1/(1 + x^k)^30, {k, 1, nmax}], {x, 0, nmax}], x] (* Vaclav Kotesovec, Aug 27 2015 *)
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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STATUS
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approved
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