A015672 Expansion of e.g.f. theta_3^(13/2).

1, 13, 143, 1287, 9321, 62205, 598455, 7702695, 78423345, 647284365, 9370936575, 174468068775, 2175194446425, 25400498248125, 529759106051175, 11093219396634375, 183808243512518625, 2892889119253258125

Offset

0,2

References

J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 102.

Links

Seiichi Manyama, Table of n, a(n) for n = 0..447

Mathematica

nmax = 25; CoefficientList[Series[EllipticTheta[3, 0, x]^(13/2), {x, 0, nmax}], x] * Range[0, nmax]! (* Vaclav Kotesovec, Oct 23 2018 *)

Crossrefs

Sequence in context: A239250 A029483 A266806 * A234601 A164825 A098298

Adjacent sequences: A015669 A015670 A015671 * A015673 A015674 A015675

Keyword

nonn

Author

N. J. A. Sloane

Status

approved