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 A294588 #11 Nov 04 2017 10:53:24
%S A294588 1,-1,-8,-19,-13,131,497,1149,662,-4780,-22394,-55992,-75053,44519,
%T A294588 614871,2048356,4311107,4894537,-4917495,-44555890,-140584885,
%U A294588 -292542844,-369256294,110050979,2247025840,7757437455,17600976064,27240355017,15747025855,-71354553868
%N A294588 Expansion of Product_{k>=1} (1 - k*x^k)^(k^2).
%H A294588 Seiichi Manyama, <a href="/A294588/b294588.txt">Table of n, a(n) for n = 0..6653</a>
%o A294588 (PARI) N=66; x='x+O('x^N); Vec(prod(k=1, N, (1-k*x^k)^k^2))
%Y A294588 Column k=2 of A294587.
%Y A294588 Cf. A285241.
%K A294588 sign
%O A294588 0,3
%A A294588 _Seiichi Manyama_, Nov 03 2017