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%I #12 Jun 12 2019 20:54:34
%S 1,156,4290,36036,141726,449592,1098812,2417844,4575714,8556132,
%T 13981110,23250084,34902582,53549496,75168522,109953272,146737890,
%U 204766848,265082246,357073860,447493332,591649344,720098808,928421208,1118340652,1408153188
%N Theta series of A_12 lattice.
%D J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 110.
%t terms = 21; f[q_] = LatticeData["A12", "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 *)
%K nonn
%O 0,2
%A _N. J. A. Sloane_.
%E More terms from Robert.Harley(AT)inria.fr, see A023902.
%E More terms from _Sean A. Irvine_, Jun 12 2019
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