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 A291696 #6 Aug 30 2017 05:59:25
%S A291696 1,-1,0,0,-4,4,0,0,6,-15,9,0,-4,40,-36,0,-15,-39,90,-36,64,-28,-180,
%T A291696 144,-96,206,106,-300,148,-540,332,480,-232,610,-1029,-189,114,-86,
%U A291696 1880,-1068,24,-921,-1545,2466,-300,2858,-1514,-3180,976,-4121,5590,1995
%N A291696 Expansion of Product_{k>=1} (1-x^(k^2))^(k^2).
%H A291696 Vaclav Kotesovec, <a href="/A291696/b291696.txt">Table of n, a(n) for n = 0..10000</a>
%t A291696 nmax = 100; CoefficientList[Series[Product[(1-x^(k^2))^(k^2), {k,1,nmax}], {x,0,nmax}], x]
%Y A291696 Cf. A073592, A291649, A291655.
%K A291696 sign
%O A291696 0,5
%A A291696 _Vaclav Kotesovec_, Aug 30 2017