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%I #11 Oct 16 2018 12:00:12
%S 1,1012,141726,6503112,130905236,1392036360,9401213016,47412641232,
%T 192747766686,663612939132,2007831887432,5456890474248,13617909938952,
%U 31527898462552,68719323996224,141662701280848,279248601010324,527242669347856,961796734667878,1695182770403416
%N Theta series of D_23 lattice.
%D J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 118.
%H Seiichi Manyama, <a href="/A022054/b022054.txt">Table of n, a(n) for n = 0..1000</a>
%t terms = 16; f[q_] = LatticeData["D23", "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 *)
%K nonn
%O 0,2
%A _N. J. A. Sloane_
%E More terms from _Seiichi Manyama_, Oct 16 2018