A023931 - OEIS

A023931

Theta series of A*_19 lattice.

1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 380, 0, 0, 0, 380, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2280, 0, 0, 0, 0, 0, 0, 0, 6840, 0, 0, 0, 0, 9690, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 31008, 38800, 0, 0, 0, 29070

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OFFSET

0,20

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: A367524 A112950 A173364 * A067159 A292152 A331907

Adjacent sequences: A023928 A023929 A023930 * A023932 A023933 A023934

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved