A023928 Theta series of A*_16 lattice.

1, 0, 0, 0, 0, 0, 0, 0, 34, 0, 0, 0, 0, 0, 0, 272, 0, 272, 0, 0, 0, 1360, 0, 0, 0, 4080, 4760, 0, 0, 0, 12376, 0, 19074, 24752, 14280, 38896, 48620, 0, 62424, 0, 0, 0, 124304, 152592, 0, 0, 0, 291312, 0, 379440, 450840, 251600, 586092, 661232, 0, 873936, 0, 0

Offset

0,9

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..57.

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: A351138 A171705 A228426 * A022070 A123301 A328913

Adjacent sequences: A023925 A023926 A023927 * A023929 A023930 A023931

Keyword

nonn

Author

N. J. A. Sloane.

Extensions

More terms from Sean A. Irvine, Jul 15 2020

Status

approved