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 A033724 #9 Oct 06 2018 11:44:06 %S A033724 1,2,2,6,8,8,18,20,18,34,40,32,56,68,44,88,108,64,122,156,96,172,232, %T A033724 128,234,322,180,294,400,216,344,516,234,400,608,288,488,708,364,524, %U A033724 864,432,620,988,480,728,1072,576,756,1174,594,896,1360,680,1050,1424,900,1188 %N A033724 Product theta3(q^d); d | 12. %D A033724 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p 102 eq 9. %H A033724 Seiichi Manyama, <a href="/A033724/b033724.txt">Table of n, a(n) for n = 0..10000</a> %K A033724 nonn %O A033724 0,2 %A A033724 _N. J. A. Sloane_