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 A033731 #8 Oct 08 2018 11:26:07
%S A033731 1,2,0,0,2,0,0,0,0,2,0,0,0,0,0,0,2,0,0,2,4,0,0,4,0,2,0,0,4,0,0,0,0,0,
%T A033731 0,4,2,0,0,0,0,0,0,0,4,0,0,0,0,2,0,0,0,0,0,4,0,0,0,0,0,0,0,0,2,0,0,0,
%U A033731 4,0,0,0,0,0,0,0,2,4,0,0,4
%N A033731 Expansion of Product_{d | 19} theta_3(q^d).
%D A033731 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p 102 eq 9.
%H A033731 Seiichi Manyama, <a href="/A033731/b033731.txt">Table of n, a(n) for n = 0..10000</a>
%K A033731 nonn
%O A033731 0,2
%A A033731 _N. J. A. Sloane_