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 A033790 #15 Jan 09 2023 06:09:00 %S A033790 1,1,0,1,0,0,1,0,0,0,1,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,1,0,0,1,1,0, %T A033790 1,0,1,1,0,0,0,1,0,0,0,1,1,0,0,0,0,0,1,0,0,1,0,0,0,1,0,0,0,0,0,0,1,1, %U A033790 0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,1,0 %N A033790 Product t2(q^d); d | 31, where t2 = theta2(q)/(2*q^(1/4)). %C A033790 Also the number of positive odd solutions to equation x^2 + 31y^2 = 8(n + 4). - _Seiichi Manyama_, May 21 2017 %H A033790 Seiichi Manyama, <a href="/A033790/b033790.txt">Table of n, a(n) for n = 0..10000</a> %F A033790 Expansion of q^(-4) * (eta(q^2) * eta(q^62))^2 / (eta(q) * eta(q^31)) in powers of q. - _Seiichi Manyama_, May 21 2017 %Y A033790 Cf. A035162, A128617, A033782. %K A033790 nonn %O A033790 0,137 %A A033790 _N. J. A. Sloane_ %E A033790 More terms from _Seiichi Manyama_, May 21 2017