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A035761 Coordination sequence for C_24 lattice. 1
1, 1152, 221952, 17282432, 733189632, 19804348032, 375282559232, 5332713820032, 59660218248192, 545370276747392, 4193961783144192, 27773897706129792, 161439727075246592, 836741699281154688, 3918338381384594688, 16763693723937678208, 66145673666689456128 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

R. Bacher, P. de la Harpe and B. Venkov, Series de croissance et series d'Ehrhart associees aux reseaux de racines, C. R. Acad. Sci. Paris, 325 (Series 1) (1997), 1137-1142.

J. Serra-Sagrista, Enumeration of lattice points in l_1 norm, Information Processing Letters, 76, no. 1-2 (2000), 39-44.

LINKS

Seiichi Manyama, Table of n, a(n) for n = 0..10000

J. H. Conway and N. J. A. Sloane, Low-Dimensional Lattices VII: Coordination Sequences, Proc. Royal Soc. London, A453 (1997), 2369-2389 (pdf).

FORMULA

a(n) = [x^(2n)] ((1+x)/(1-x))^24.

CROSSREFS

Sequence in context: A339926 A170775 A166490 * A107557 A330266 A020382

Adjacent sequences:  A035758 A035759 A035760 * A035762 A035763 A035764

KEYWORD

nonn,easy

AUTHOR

Joan Serra-Sagrista (jserra(AT)ccd.uab.es)

EXTENSIONS

Recomputed by N. J. A. Sloane, Nov 25 1998

STATUS

approved

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Last modified December 1 16:44 EST 2021. Contains 349430 sequences. (Running on oeis4.)