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A022073 Theta series of D*_20 lattice. 0
1, 40, 760, 9120, 77560, 1546224, 2508000, 31204160, 34729720, 300136200, 259114704, 1823305440, 1327461600, 8216920880, 5341699520, 29758804416, 17701924600, 91800254160, 51294999960, 249835104800 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 120.

LINKS

Table of n, a(n) for n=0..19.

CROSSREFS

Sequence in context: A233725 A175603 A319308 * A261571 A010956 A006240

Adjacent sequences:  A022070 A022071 A022072 * A022074 A022075 A022076

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified April 25 00:29 EDT 2019. Contains 322446 sequences. (Running on oeis4.)