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 A033726 #9 Oct 06 2018 11:44:19 %S A033726 1,2,2,4,2,0,4,2,6,10,8,8,4,8,2,8,18,12,18,12,8,4,16,24,28,30,16,24,2, %T A033726 20,32,24,38,32,28,0,18,20,28,40,40,28,4,40,16,48,32,24,68,2,38,40,16, %U A033726 28,56,48,6,48,36,44,32,48 %N A033726 Product theta3(q^d); d | 14. %D A033726 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p 102 eq 9. %H A033726 Seiichi Manyama, <a href="/A033726/b033726.txt">Table of n, a(n) for n = 0..10000</a> %K A033726 nonn %O A033726 0,2 %A A033726 _N. J. A. Sloane_