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 A280224 #5 Dec 29 2016 11:08:12
%S A280224 1,3,4,7,13,23,33,51,74,110,158,222,307,429,587,792,1065,1423,1877,
%T A280224 2470,3227,4196,5416,6963,8899,11344,14384,18158,22840,28647,35786,
%U A280224 44552,55295,68423,84422,103879,127457,156009,190481,232007,281934,341879,413640
%N A280224 G.f.: Product_{k>=1} (1 + 2*x^(k^2)) / (1-x^k).
%C A280224 Convolution of A279360 and A000041.
%H A280224 Vaclav Kotesovec, <a href="/A280224/b280224.txt">Table of n, a(n) for n = 0..10000</a>
%F A280224 a(n) ~ exp(Pi*sqrt((2*n)/3) + 3^(1/4)*c*n^(1/4)/ 2^(3/4) - 3*c^2/(32*Pi)) / (12*n), where c = -PolyLog(3/2, -2).
%t A280224 nmax=50; CoefficientList[Series[Product[(1+2*x^(k^2))/(1-x^k), {k, 1, nmax}], {x, 0, nmax}], x]
%Y A280224 Cf. A000041, A033461, A279360, A280204, A280225.
%K A280224 nonn
%O A280224 0,2
%A A280224 _Vaclav Kotesovec_, Dec 29 2016