A023905 Theta series of A_14 lattice.

1, 210, 8190, 102830, 570780, 2140866, 6527430, 16213080, 36584730, 73035900, 139912500, 243455940, 417269580, 664812330, 1050179130, 1567036926, 2347625490, 3315827970, 4752128290, 6479581290, 8930870676, 11796130710, 15862692300, 20336924790

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-François 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