A023936 Theta series of A*_24 lattice.

1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 50, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 600, 0, 600, 0, 0, 0, 0, 0, 0, 0, 4600, 0, 0, 0, 13800, 0, 0, 0, 0, 25300, 0, 0, 0, 0, 0, 101250, 0, 182160, 0, 0, 0, 0, 0, 0, 354200, 532500, 0, 0, 0, 1063800, 961400, 0, 0, 0, 2139000

Offset

0,13

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..67.

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: A203499 A013843 A303146 * A324676 A015066 A022078

Adjacent sequences: A023933 A023934 A023935 * A023937 A023938 A023939

Keyword

nonn

Author

N. J. A. Sloane

Extensions

More terms from Sean A. Irvine, Jul 15 2020

Status

approved