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

0,2

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

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) *)

Crossrefs

Sequence in context: A027797 A055663 A333139 * A095702 A271674 A107506

Adjacent sequences: A022039 A022040 A022041 * A022043 A022044 A022045

Keyword

nonn

Author

N. J. A. Sloane

Extensions

More terms from Seiichi Manyama, Oct 16 2018

Status

approved