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 A285071 #23 Apr 18 2017 07:32:05
%S A285071 1,-1,0,0,0,0,-6,6,0,0,0,-11,26,-15,0,0,-16,82,-86,20,0,-21,172,-316,
%T A285071 180,-15,-26,328,-872,790,-226,-25,538,-2043,2681,-1310,130,843,-4184,
%U A285071 7426,-5390,1365,1158,-7855,18067,-17705,7185,798,-13701,39468,-50030
%N A285071 Expansion of Product_{k>=0} (1-x^(5*k+1))^(5*k+1).
%H A285071 Seiichi Manyama, <a href="/A285071/b285071.txt">Table of n, a(n) for n = 0..10000</a> (terms 0..1000 from Vaclav Kotesovec)
%t A285071 nmax = 50; CoefficientList[Series[Product[(1-x^(5*k-4))^(5*k-4), {k, 1, nmax}], {x, 0, nmax}], x] (* _Vaclav Kotesovec_, Apr 17 2017 *)
%Y A285071 Product_{k>=0} (1-x^(m*k+1))^(m*k+1): A285069 (m=2), A285050 (m=3), A285070 (m=4), this sequence (m=5).
%Y A285071 Cf. A285049, A285338.
%K A285071 sign
%O A285071 0,7
%A A285071 _Seiichi Manyama_, Apr 15 2017