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A015684
Expansion of e.g.f. theta_3^(-7/2).
2
1, -7, 63, -693, 8841, -127575, 2047815, -36081045, 690863985, -14263534215, 315469515375, -7434244696725, 185817177956025, -4906778826324375, 136422375634920375, -3981559981797523125, 121659806332798358625
OFFSET
0,2
REFERENCES
J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 102.
LINKS
MATHEMATICA
nmax = 25; CoefficientList[Series[EllipticTheta[3, 0, x]^(-7/2), {x, 0, nmax}], x] * Range[0, nmax]! (* Vaclav Kotesovec, Oct 23 2018 *)
CROSSREFS
Sequence in context: A368164 A345078 A233743 * A051579 A185106 A375175
KEYWORD
sign
STATUS
approved