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 A327757 #20 Feb 16 2025 08:33:58
%S A327757 1,-1,1,-1,0,1,-1,2,-1,0,0,-2,2,-2,2,0,-2,3,-5,4,-2,0,4,-6,7,-6,4,1,
%T A327757 -4,8,-10,8,-4,-2,9,-13,14,-12,3,4,-14,20,-21,17,-8,-6,19,-28,31,-23,
%U A327757 10,10,-28,41,-41,32,-10,-16,40,-58,58,-44,13,24,-61,81,-84,59,-16,-37,84
%N A327757 Expansion of Product_{k>=1} (1 - x^k)^(3/k), where (m/n) is the Kronecker symbol.
%H A327757 Seiichi Manyama, <a href="/A327757/b327757.txt">Table of n, a(n) for n = 0..1000</a>
%H A327757 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/KroneckerSymbol.html">Kronecker Symbol</a>
%o A327757 (PARI) N=66; x='x+O('x^N); Vec(prod(k=1, N, (1-x^k)^kronecker(3, k)))
%Y A327757 Product_{k>=1} (1 - x^k)^(b/k): A092869 (b=2), A081362 (b=4), A007325 (b=5), A092876 (b=13).
%Y A327757 Cf. A091338, A327758.
%K A327757 sign,look
%O A327757 0,8
%A A327757 _Seiichi Manyama_, Sep 24 2019