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A008432 Theta series of D_10 lattice. 0
1, 180, 3380, 16320, 52020, 129064, 262080, 489600, 840500, 1330420, 2050344, 2986560, 4194240, 5878440, 7862400, 10216320, 13415220, 17163880, 21250420, 26585280, 32826664, 39475200, 47960640 (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. 118.

LINKS

Table of n, a(n) for n=0..22.

MATHEMATICA

terms = 23; s = 1/2 (EllipticTheta[3, 0, q]^10 + EllipticTheta[4, 0, q]^10) + O[q]^(2 terms); CoefficientList[s, q^2] (* Jean-Fran├žois Alcover, Jul 07 2017 *)

CROSSREFS

Sequence in context: A179721 A112068 A058835 * A289318 A250146 A243465

Adjacent sequences:  A008429 A008430 A008431 * A008433 A008434 A008435

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified December 11 15:43 EST 2017. Contains 295905 sequences.