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 A321444 #8 Nov 10 2018 10:16:00
%S A321444 1,0,0,0,0,-1,0,0,0,0,-1,0,0,-1,0,1,0,-1,1,0,-1,0,1,1,0,0,-1,1,-1,-1,
%T A321444 3,1,-1,1,0,-1,1,0,0,3,-3,-2,2,-1,-1,2,3,-1,-1,-1,0,1,-4,0,4,0,-6,4,1,
%U A321444 -6,3,1,0,2,-4,-2,6,-4,-5,9,-1,-5,2,-1,-2,0,-3,2,11
%N A321444 Expansion of Product_{0 < i < j} (1 - x^(i^2 + j^2)).
%F A321444 G.f.: Product_{k>0} (1 - x^k)^A025441(k).
%Y A321444 Cf. A025441, A319734, A321436.
%K A321444 sign
%O A321444 0,31
%A A321444 _Seiichi Manyama_, Nov 09 2018