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A008449 Theta series of A_9 lattice. 4

%I

%S 1,90,1260,4920,13320,30492,55860,94680,156240,232770,332640,471240,

%T 636480,835020,1098900,1391040,1720800,2181780,2614260,3118680,

%U 3889962,4519140,5207760,6237000

%N Theta series of A_9 lattice.

%D J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 110.

%t terms = 24; f[q_] = LatticeData["A9", "ThetaSeriesFunction"][-I Log[q]/Pi]; Series[f[q], {q, 0, 2 terms - 1}] // CoefficientList[#, q]& // Round // DeleteCases[#, 0]& (* _Jean-Fran├žois Alcover_, Jul 04 2017 *)

%K nonn

%O 0,2

%A _N. J. A. Sloane_.

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Last modified November 13 02:43 EST 2018. Contains 317121 sequences. (Running on oeis4.)