A015690 Expansion of e.g.f. theta_3^(-13/2).

1, -13, 195, -3315, 62673, -1299285, 29228355, -707636475, 18316505025, -504116658045, 14685387955875, -451033728019875, 14555826008348625, -492141539705941125, 17387673626552904675, -640456882350467056875

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..425

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: A177508 A228659 A221581 * A027773 A099271 A081796

Adjacent sequences: A015687 A015688 A015689 * A015691 A015692 A015693

Keyword

sign

Author

N. J. A. Sloane

Status

approved