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 A320135 #12 Oct 08 2018 03:20:31 %S A320135 1,4,6,8,12,8,8,16,6,12,24,8,24,26,8,28,28,40,46,40,56,28,48,64,24,76, %T A320135 72,32,80,32,32,92,54,80,80,64,68,56,80,64,88,112,64,40,88,52,64,128, %U A320135 56,108,110,64,106,80,76,160,104,96,168,56,124,112,120,124,92,208,96 %N A320135 Number of integer solutions to a^2 + b^2 + 2*c^2 + 13*d^2 = n. %C A320135 a(n) > 0 for n >= 0. %H A320135 Seiichi Manyama, <a href="/A320135/b320135.txt">Table of n, a(n) for n = 0..10000</a> %F A320135 G.f.: theta_3(q)^2 * theta_3(q^2) * theta_3(q^13). %Y A320135 Cf. A097057, A320124, A320125, A320126, A320127, A320128, A320130, A320131, A320132, A320133, A320134, A320136. %K A320135 nonn %O A320135 0,2 %A A320135 _Seiichi Manyama_, Oct 06 2018