A022042 Theta series of D_11 lattice.

1, 220, 5302, 33528, 116380, 339064, 719400, 1538416, 2624182, 4763220, 7217144, 11676280, 16317048, 25022184, 32503680, 47430768, 59759260, 82927856, 101189550, 137904360, 161928184, 215389680, 250679288, 323294576, 369052200, 474160324, 527004280, 668075232, 742047856

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

References

• J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 118.

Links

• Seiichi Manyama, Table of n, a(n) for n = 0..10000

Programs

Mathematica

terms = 22; s = 1/2 (EllipticTheta[3, 0, q]^11 + EllipticTheta[4, 0, q]^11) + O[q]^(2 terms); CoefficientList[s, q^2] (* Jean-François Alcover, Jul 07 2017, after LatticeData(D11) *)

Extensions

More terms from Seiichi Manyama, Oct 16 2018