A023933 Theta series of A*_21 lattice.

1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 44, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 462, 0, 0, 0, 462, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3080, 0, 0, 0, 0, 0, 0, 0, 9240, 0, 0, 0, 0, 0, 0, 14630, 0, 0, 0, 0, 0, 0, 0, 0

Offset

0,22

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..80.

Crossrefs

Sequence in context: A087529 A050525 A138086 * A271141 A350718 A022075

Adjacent sequences: A023930 A023931 A023932 * A023934 A023935 A023936

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved