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A023932 Theta series of A*_20 lattice. 0
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 42, 0, 0, 0, 0, 0, 0, 0, 0, 420, 0, 420, 0, 0, 0, 0, 0, 2660, 0, 0, 0, 7980, 0, 0, 11970, 0, 0, 0, 0, 0, 88620, 0, 35910, 0, 0, 108528, 0, 0, 204330, 232560, 0, 0, 814800, 0, 587860, 1364580, 0, 0, 0, 0, 0, 3319680, 0, 1093260, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,11
REFERENCES
J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 114.
LINKS
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: A125194 A237639 A095189 * A243831 A022074 A335188
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Sean A. Irvine, Jul 15 2020
STATUS
approved

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Last modified July 14 13:51 EDT 2024. Contains 374318 sequences. (Running on oeis4.)