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.
%I A280661 #6 Jan 07 2017 06:39:48 %S A280661 1,1,2,3,5,7,11,15,23,31,44,59,82,108,146,191,255,329,431,552,714,907, %T A280661 1159,1461,1853,2318,2911,3622,4515,5582,6912,8499,10464,12801,15667, %U A280661 19079,23236,28168,34142,41222,49755,59836,71926,86190,103218,123262,147091 %N A280661 G.f.: Product_{k>=1, j>=1} 1/(1 - x^(j*k^3)). %H A280661 Vaclav Kotesovec, <a href="/A280661/b280661.txt">Table of n, a(n) for n = 0..10000</a> %F A280661 a(n) ~ exp(Pi*sqrt(2*Zeta(3)*n/3) + Pi^(-1/3) * Gamma(4/3) * Zeta(4/3) * Zeta(1/3) * (6*n/Zeta(3))^(1/6)) * Pi^(3/4) * Zeta(3)^(1/8) / (6^(1/8) * n^(5/8)). %t A280661 nmax = 100; CoefficientList[Series[1/Product[1-x^(j*k^3), {k, 1, Floor[nmax^(1/3)]+1}, {j, 1, Floor[nmax/k^3]+1}], {x, 0, nmax}], x] %Y A280661 Cf. A006171, A004101, A280662. %K A280661 nonn %O A280661 0,3 %A A280661 _Vaclav Kotesovec_, Jan 07 2017