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 A285284 #13 Apr 16 2017 10:27:35
%S A285284 1,-1,-2,-1,4,0,-4,3,21,-4,-29,-7,51,-24,-105,-7,201,-30,-291,34,642,
%T A285284 -42,-874,75,1764,-262,-2737,-40,4555,-818,-7512,88,12425,-1492,
%U A285284 -19062,1135,32637,-2573,-47688,3576,81335,-6477,-119540,6525,193738,-18478,-292685
%N A285284 Expansion of Product_{k>=1} (1 - x^k)^k/(1 - x^(4*k))^(4*k).
%H A285284 Seiichi Manyama, <a href="/A285284/b285284.txt">Table of n, a(n) for n = 0..10000</a>
%t A285284 nmax = 50; CoefficientList[Series[Product[(1 - x^k)^k/(1 - x^(4*k))^(4*k), {k,1,nmax}], {x,0,nmax}], x] (* _Vaclav Kotesovec_, Apr 16 2017 *)
%Y A285284 Product_{k>=1} (1 - x^k)^k/(1 - x^(m*k))^(m*k): A285069 (m=2), A285247 (m=3), this sequence (m=4), A285285 (m=5).
%Y A285284 Cf. A285215, A285292.
%K A285284 sign
%O A285284 0,3
%A A285284 _Seiichi Manyama_, Apr 16 2017