A015671 Expansion of e.g.f. theta_3^(11/2).

1, 11, 99, 693, 3729, 22275, 259875, 2900205, 19490625, 161008155, 3451399875, 48646261125, 433937559825, 6657275099475, 145157601463875, 2607210889408125, 38347348433018625, 476849547788488875

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

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

Programs

Mathematica

nmax = 25; CoefficientList[Series[EllipticTheta[3, 0, x]^(11/2), {x, 0, nmax}], x] * Range[0, nmax]! (* Vaclav Kotesovec, Oct 23 2018 *)