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A022046
Theta series of D_15 lattice.
2
1, 420, 21870, 331240, 2128260, 8972712, 29822520, 80027280, 193511790, 409172940, 825736296, 1509537960, 2698852520, 4472616120, 7347537600, 11335886864, 17520853380, 25553816400, 37658603350, 52706867640, 74655559272, 100969845200, 138840872040, 182317633680
OFFSET
0,2
REFERENCES
J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 118.
LINKS
MATHEMATICA
terms = 20; f[q_] = LatticeData["D15", "ThetaSeriesFunction"][-I*Log[q]/Pi]; s = f[q] + O[q]^(2 terms); DeleteCases[CoefficientList[s, q], 0][[1 ;; terms]] (* Jean-François Alcover, Jul 06 2017 *)
CROSSREFS
Sequence in context: A289226 A133712 A058834 * A289348 A107510 A023911
KEYWORD
nonn
EXTENSIONS
More terms from Seiichi Manyama, Oct 16 2018
STATUS
approved