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 A293253 #8 Oct 04 2017 11:47:48
%S A293253 1,2,1,3,4,6,6,8,12,15,20,22,30,35,46,53,67,80,97,117,138,165,195,231,
%T A293253 272,323,378,442,514,600,696,806,931,1078,1240,1431,1638,1881,2147,
%U A293253 2461,2802,3197,3632,4131,4685,5310,6009,6790,7670,8652,9749,10968,12336
%N A293253 Expansion of Product_{k>=1} (1 + x^k + x^(k^2)).
%H A293253 Vaclav Kotesovec, <a href="/A293253/b293253.txt">Table of n, a(n) for n = 0..10000</a>
%t A293253 nmax = 100; CoefficientList[Series[Product[(1+x^k+x^(k^2)), {k, 1, nmax}], {x, 0, nmax}], x]
%Y A293253 Cf. A033461, A263401, A293204, A293254.
%K A293253 nonn
%O A293253 0,2
%A A293253 _Vaclav Kotesovec_, Oct 04 2017