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 A015679 #11 Oct 23 2018 07:16:51
%S A015679 1,25,575,12075,230025,3969225,62850375,953260875,14929952625,
%T A015679 254408009625,4570418955375,82108573036875,1505493410045625,
%U A015679 30038848390175625,641671899357864375,13683270472813816875
%N A015679 Expansion of e.g.f. theta_3^(25/2).
%D A015679 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 102.
%H A015679 Seiichi Manyama, <a href="/A015679/b015679.txt">Table of n, a(n) for n = 0..444</a>
%t A015679 nmax = 25; CoefficientList[Series[EllipticTheta[3, 0, x]^(25/2), {x, 0, nmax}], x] * Range[0, nmax]! (* _Vaclav Kotesovec_, Oct 23 2018 *)
%K A015679 nonn
%O A015679 0,2
%A A015679 _N. J. A. Sloane_