A023934 Theta series of A*_22 lattice.

1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 46, 0, 0, 0, 0, 0, 0, 0, 0, 0, 506, 0, 506, 0, 0, 0, 0, 0, 0, 3542, 0, 0, 0, 10626, 0, 0, 0, 17710, 0, 0, 0, 0, 0, 70886, 67298, 53130, 0, 0, 0, 0, 201894, 0, 337502, 0, 0, 490314, 673992, 0, 0, 980628, 1221990, 0, 1634380, 0

Offset

0,12

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..64.

Kok Seng Chua, The Root Lattice A*n and Ramanujan's Circular Summation of Theta Functions, Proc. Amer. Math. Soc. 130 (2002), 1-8.

Crossrefs

Sequence in context: A145319 A089626 A110479 * A022076 A055766 A267319

Adjacent sequences: A023931 A023932 A023933 * A023935 A023936 A023937

Keyword

nonn

Author

N. J. A. Sloane.

Extensions

More terms from Sean A. Irvine, Jul 15 2020

Status

approved