cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A304459 Coefficient of x^n in Product_{k>=1} (1+x^k)^(n^3).

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%I A304459 #7 May 13 2018 05:16:59
%S A304459 1,1,36,3681,770576,276218900,151479085752,117975860569973,
%T A304459 123825991870849088,168480096257782525419,288418999876101261408100,
%U A304459 606652152400218992684850772,1537897976017806908644807294656,4624364862288125600795358272563097
%N A304459 Coefficient of x^n in Product_{k>=1} (1+x^k)^(n^3).
%C A304459 In general, for m>=3, coefficient of x^n in Product_{k>=1} (1+x^k)^(n^m) is asymptotic to n^(m*n)/n!.
%F A304459 a(n) ~ exp(n) * n^(2*n - 1/2) / sqrt(2*Pi).
%t A304459 nmax = 20; Table[SeriesCoefficient[Product[(1+x^k)^(n^3), {k, 1, n}], {x, 0, n}], {n, 0, nmax}]
%t A304459 nmax = 20; Table[SeriesCoefficient[(QPochhammer[-1, x]/2)^(n^3), {x, 0, n}], {n, 0, nmax}]
%Y A304459 Cf. A248882, A270913, A304445, A304460.
%K A304459 nonn
%O A304459 0,3
%A A304459 _Vaclav Kotesovec_, May 13 2018