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 A320193 #12 Oct 08 2018 04:13:18 %S A320193 1,2,2,4,6,8,12,16,14,14,24,20,20,24,16,16,30,36,14,36,40,32,60,48,36, %T A320193 42,72,40,48,56,16,64,62,40,36,64,42,72,108,48,72,84,96,84,100,56,48, %U A320193 96,68,114,42,72,120,104,120,80,112,72,168,116,48,120,64,112,126,96 %N A320193 Number of integer solutions to a^2 + 2*b^2 + 4*c^2 + 4*d^2 = n. %C A320193 a(n) > 0 for n >= 0. %H A320193 Seiichi Manyama, <a href="/A320193/b320193.txt">Table of n, a(n) for n = 0..10000</a> %F A320193 G.f.: theta_3(q) * theta_3(q^2) * theta_3(q^4)^2. %Y A320193 Cf. A320194, A320195, A320196, A033720, A320197, A320198, A320199, A320200, A320201, A320202. %K A320193 nonn %O A320193 0,2 %A A320193 _Seiichi Manyama_, Oct 07 2018