A035831 - OEIS

A035831

Coordination sequence for lattice D*_92 (with edges defined by l_1 norm = 1).

1, 184, 16928, 1038312, 47770816, 1758589016, 53961910368, 1419683493256, 32693191777664, 669498341282552, 12344924033021088, 207044682467947560, 3184972567869380160, 45254803384239490200, 597507392393892768480

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OFFSET

0,2

LINKS

Table of n, a(n) for n=0..14.

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

FORMULA

a(m)=add(2^k*binomial(n, k)*binomial(m-1, k-1), k=0..n)+2^n*binomial((n+2*m)/2-1, n-1); with n=92.

CROSSREFS

Sequence in context: A223117 A221782 A296780 * A094631 A060491 A203843

Adjacent sequences: A035828 A035829 A035830 * A035832 A035833 A035834

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, J. Serra-Sagrista (jserra(AT)ccd.uab.es)

STATUS

approved