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A023926 Theta series of A*_14 lattice. 0
1, 0, 0, 0, 0, 0, 0, 30, 0, 0, 0, 0, 0, 210, 0, 210, 0, 0, 910, 0, 0, 0, 5460, 0, 0, 6006, 0, 10010, 23820, 0, 8190, 0, 0, 30450, 0, 0, 0, 123270, 0, 0, 101010, 0, 132990, 305760, 0, 102830, 0, 0, 303030, 0, 0, 0, 974820, 0, 0, 663390, 0, 827190, 1861860, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,8

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..59.

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: A144839 A124992 A296522 * A022068 A277043 A198805

Adjacent sequences:  A023923 A023924 A023925 * A023927 A023928 A023929

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Sean A. Irvine, Jul 15 2020

STATUS

approved

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Last modified August 5 08:27 EDT 2021. Contains 346464 sequences. (Running on oeis4.)