A035816 Coordination sequence for lattice D*_62 (with edges defined by l_1 norm = 1).

1, 124, 7688, 317812, 9856016, 244619884, 5062048280, 89845298020, 1396398655520, 19309150041180, 240550579435048, 2727459472756052, 28384206701341744, 273049514243591756, 2442767874758677048

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=62.

Crossrefs

Sequence in context: A253007 A293084 A289299 * A206077 A097842 A206189

Adjacent sequences: A035813 A035814 A035815 * A035817 A035818 A035819

Keyword

nonn

Author

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

Status

approved