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 A033742 #12 Oct 10 2018 08:20:36
%S A033742 1,2,2,6,6,6,18,12,18,38,22,48,62,36,80,82,78,132,122,136,178,196,208,
%T A033742 212,298,290,340,474,312,428,582,424,642,688,572,868,934,772,872,1068,
%U A033742 1078,1292,1568,1124,1344,1906
%N A033742 Expansion of Product_{d | 30} theta_3(q^d).
%D A033742 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p 102 eq 9.
%H A033742 Seiichi Manyama, <a href="/A033742/b033742.txt">Table of n, a(n) for n = 0..10000</a>
%H A033742 R. W. Whitty, <a href="https://dx.doi.org/10.1016/j.disc.2007.07.054">Rook polynomials on two-dimensional surfaces and graceful labellings of graphs</a>, Discrete Math., 308 (2008), 674-683.
%K A033742 nonn
%O A033742 0,2
%A A033742 _N. J. A. Sloane_