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 A033723 #9 Oct 06 2018 11:43:52 %S A033723 1,2,0,0,2,0,0,0,0,2,0,2,4,0,0,4,2,0,0,0,4,0,0,0,0,2,0,4,0,0,0,0,0,0, %T A033723 0,0,6,0,0,0,0,0,0,0,2,4,0,4,4,2,0,0,0,4,0,0,0,0,0,0,8,0,0,0,2,0,0,0, %U A033723 0,4,0,0,0,0,0,4,0,0,0,0,4 %N A033723 Product theta3(q^d); d | 11. %D A033723 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p 102 eq 9. %H A033723 Seiichi Manyama, <a href="/A033723/b033723.txt">Table of n, a(n) for n = 0..10000</a> %K A033723 nonn %O A033723 0,2 %A A033723 _N. J. A. Sloane_