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A015678 Expansion of e.g.f. theta_3^(23/2). 1
1, 23, 483, 9177, 156561, 2398095, 33725475, 465686865, 6952917825, 114751084455, 1935277553475, 32136707104425, 567545846123025, 11263156788858975, 229832929643191875, 4560180147352454625 (list; graph; refs; listen; history; text; internal format)
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..444

MATHEMATICA

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

CROSSREFS

Sequence in context: A328348 A095256 A273008 * A293083 A014905 A200734

Adjacent sequences:  A015675 A015676 A015677 * A015679 A015680 A015681

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified December 7 13:08 EST 2021. Contains 349581 sequences. (Running on oeis4.)