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 A319517 #21 Nov 15 2018 11:11:09
%S A319517 1,-1,-1,0,-1,2,0,2,-1,0,3,-1,-2,-1,1,-6,-1,0,0,0,7,-1,1,-2,4,1,-2,11,
%T A319517 1,-2,-10,11,-11,15,-16,-6,-7,-10,-1,10,-5,-10,12,-20,19,-16,24,-2,28,
%U A319517 -9,41,-6,15,20,4,-21,-15,-13,-14,13,-73,67,-30,-44,-19,31,-30
%N A319517 Expansion of Product_{1 <= i_1 <= i_2 <= i_3 <= i_4} (1 - x^(i_1*i_2*i_3*i_4)).
%H A319517 Seiichi Manyama, <a href="/A319517/b319517.txt">Table of n, a(n) for n = 0..10000</a>
%F A319517 G.f.: Product_{k>0} (1 - x^k)^A218320(k).
%Y A319517 Convolution inverse of A321566.
%Y A319517 Product_{1 <= i_1 <= i_2 <= ... <= i_b} (1 - x^(i_1 * i_2 * ... * i_b)): A010815 (b=1), A321299 (b=2), A321361 (b=3), this sequence (b=4).
%Y A319517 Cf. A218320, A321460, A321567.
%K A319517 sign
%O A319517 0,6
%A A319517 _Seiichi Manyama_, Nov 14 2018