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 A015675 #10 Oct 23 2018 07:10:46
%S A015675 1,17,255,3315,36873,358785,3490695,42117075,590951025,7589122065,
%T A015675 91863766575,1430858704275,26509807949625,422022682706625,
%U A015675 6430806556349175,132605511681517875,2979787265909078625
%N A015675 Expansion of e.g.f. theta_3^(17/2).
%D A015675 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 102.
%H A015675 Seiichi Manyama, <a href="/A015675/b015675.txt">Table of n, a(n) for n = 0..446</a>
%t A015675 nmax = 25; CoefficientList[Series[EllipticTheta[3, 0, x]^(17/2), {x, 0, nmax}], x] * Range[0, nmax]! (* _Vaclav Kotesovec_, Oct 23 2018 *)
%K A015675 nonn
%O A015675 0,2
%A A015675 _N. J. A. Sloane_