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 A320200 #11 Oct 08 2018 02:52:31 %S A320200 1,2,2,4,4,4,8,8,6,6,8,4,10,16,4,16,20,16,26,28,20,20,40,16,24,38,8, %T A320200 32,40,20,20,40,22,32,64,24,28,48,40,40,56,16,16,52,20,52,32,32,50,62, %U A320200 62,32,80,36,80,80,28,68,40,52,80,80,20,56,84,48,100,100,32,64 %N A320200 Number of integer solutions to a^2 + 2*b^2 + 4*c^2 + 12*d^2 = n. %C A320200 a(n) > 0 for n >= 0. %H A320200 Seiichi Manyama, <a href="/A320200/b320200.txt">Table of n, a(n) for n = 0..10000</a> %F A320200 G.f.: theta_3(q) * theta_3(q^2) * theta_3(q^4) * theta_3(q^12). %Y A320200 Cf. A320193, A320194, A320195, A320196, A033720, A320197, A320198, A320199, A320201, A320202. %K A320200 nonn %O A320200 0,2 %A A320200 _Seiichi Manyama_, Oct 07 2018