A015678 Expansion of e.g.f. theta_3^(23/2).

1, 23, 483, 9177, 156561, 2398095, 33725475, 465686865, 6952917825, 114751084455, 1935277553475, 32136707104425, 567545846123025, 11263156788858975, 229832929643191875, 4560180147352454625

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..444

Programs

Mathematica

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