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 A320150 #12 Oct 08 2018 03:50:09 %S A320150 1,2,4,10,10,16,24,12,28,26,8,48,30,28,72,32,34,64,28,36,80,60,72,96, %T A320150 72,42,56,82,36,112,120,60,124,96,32,96,130,76,216,140,56,160,48,84, %U A320150 144,112,144,192,150,86,84,128,140,208,240,96,216,180,56,240,96,124,360 %N A320150 Number of integer solutions to a^2 + 2*b^2 + 2*c^2 + 3*d^2 = n. %C A320150 a(n) > 0 for n >= 0. %H A320150 Seiichi Manyama, <a href="/A320150/b320150.txt">Table of n, a(n) for n = 0..10000</a> %F A320150 G.f.: theta_3(q) * theta_3(q^2)^2 * theta_3(q^3). %Y A320150 Cf. A320149, A236924, A320151, A320152, A320153. %K A320150 nonn %O A320150 0,2 %A A320150 _Seiichi Manyama_, Oct 06 2018