A023927 Theta series of A*_15 lattice.

1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 240, 0, 0, 0, 240, 0, 0, 0, 0, 0, 0, 1120, 0, 0, 0, 0, 0, 0, 0, 3360, 3640, 0, 0, 0, 0, 0, 0, 8736, 0, 0, 0, 0, 30608, 0, 0, 22880, 23790, 0, 0, 0, 0, 0, 0, 44160, 0, 0, 0, 0, 0, 0, 0, 87840

Offset

0,16

References

J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 114.

Links

Table of n, a(n) for n=0..79.

G. Nebe and N. J. A. Sloane, Home page for this lattice

Example

1 + 32*q^15 + 240*q^28 + 240*q^32 + O(q^37)

Crossrefs

Cf. A023906 (A_15).

Sequence in context: A324268 A145210 A091308 * A345676 A240253 A057376

Adjacent sequences: A023924 A023925 A023926 * A023928 A023929 A023930

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved