Voozh

A035760

Coordination sequence for C_23 lattice.

1, 1058, 187266, 13408034, 523804162, 13053926690, 228751366018, 3013639296546, 31343842260994, 267120108528162, 1920511723360130, 11923933134635298, 65157237071384066, 318308216281781026, 1408463692886754178, 5707273421568956450, 21377026411532247042, 74604432883744337954

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

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

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

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

Joan Serra-Sagrista, Enumeration of lattice points in l_1 norm, Inf. Proc. Lett. 76 (1-2) (2000) 39-44.

FORMULA

a(n) = [x^(2n)] ((1+x)/(1-x))^23.

CROSSREFS

Sequence in context: A351770 A202611 A253678 * A107556 A237797 A237795