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A023905 Theta series of A_14 lattice. 0
1, 210, 8190, 102830, 570780, 2140866, 6527430, 16213080, 36584730, 73035900, 139912500, 243455940, 417269580, 664812330, 1050179130, 1567036926, 2347625490, 3315827970, 4752128290, 6479581290, 8930870676, 11796130710, 15862692300, 20336924790 (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. 110.

LINKS

Table of n, a(n) for n=0..23.

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

MATHEMATICA

terms = 20; f[q_] = LatticeData["A14", "ThetaSeriesFunction"][-I*Log[q]/Pi]; s = f[q] + O[q]^(2 terms); Partition[CoefficientList[s, q] // Round, 2][[All, 1]][[1 ;; terms]] (* Jean-Fran├žois Alcover, Jul 06 2017 *)

CROSSREFS

Sequence in context: A087977 A185042 A323963 * A035840 A140904 A092711

Adjacent sequences:  A023902 A023903 A023904 * A023906 A023907 A023908

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Robert.Harley(AT)inria.fr, see A023902.

More terms from Sean A. Irvine, Jun 12 2019

STATUS

approved

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Last modified August 7 19:57 EDT 2020. Contains 336279 sequences. (Running on oeis4.)