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A023936 Theta series of A*_24 lattice. 1
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 50, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 600, 0, 600, 0, 0, 0, 0, 0, 0, 0, 4600, 0, 0, 0, 13800, 0, 0, 0, 0, 25300, 0, 0, 0, 0, 0, 101250, 0, 182160, 0, 0, 0, 0, 0, 0, 354200, 532500, 0, 0, 0, 1063800, 961400, 0, 0, 0, 2139000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,13

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..67.

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: A203499 A013843 A303146 * A324676 A015066 A022078

Adjacent sequences:  A023933 A023934 A023935 * A023937 A023938 A023939

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 September 18 20:10 EDT 2021. Contains 347534 sequences. (Running on oeis4.)