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A022045 Theta series of D_14 lattice. 3
1, 364, 16044, 200928, 1089452, 4196920, 12547808, 31553344, 70439852, 142487436, 268594872, 476105504, 800698080, 1296257144, 2022013760, 3056208064, 4507001772, 6481076056, 9123064524, 12637846368, 17190762680, 22999441920, 30453867808, 39772497856, 51254988512 (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

Seiichi Manyama, Table of n, a(n) for n = 0..10000

G. Nebe and N. J. A. Sloane, Home page for this lattice

MATHEMATICA

terms = 20; f[q_] = LatticeData["D14", "ThetaSeriesFunction"][-I*Log[q]/Pi]; s = f[q] + O[q]^(2 terms); DeleteCases[CoefficientList[s, q], 0][[1 ;; terms]] (* Jean-Fran├žois Alcover, Jul 06 2017 *)

CROSSREFS

Sequence in context: A027799 A115191 A175114 * A278002 A107509 A140935

Adjacent sequences:  A022042 A022043 A022044 * A022046 A022047 A022048

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

EXTENSIONS

More terms from Seiichi Manyama, Oct 16 2018

STATUS

approved

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Last modified May 21 19:31 EDT 2019. Contains 323444 sequences. (Running on oeis4.)