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 A015693 #13 Oct 23 2018 08:15:35
%S A015693 1,-17,323,-6783,155601,-3861465,102864195,-2922828615,88124295105,
%T A015693 -2806906632705,94095203991075,-3309050756278575,121731738138774225,
%U A015693 -4672861215811814025,186756565415026882275,-7755673484776330488375
%N A015693 Expansion of e.g.f. theta_3^(-17/2).
%D A015693 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 102.
%H A015693 Seiichi Manyama, <a href="/A015693/b015693.txt">Table of n, a(n) for n = 0..422</a>
%t A015693 nmax = 25; CoefficientList[Series[EllipticTheta[3, 0, x]^(-17/2), {x, 0, nmax}], x] * Range[0, nmax]! (* _Vaclav Kotesovec_, Oct 23 2018 *)
%K A015693 sign
%O A015693 0,2
%A A015693 _N. J. A. Sloane_