A035822 Coordination sequence for lattice D*_74 (with edges defined by l_1 norm = 1).

1, 148, 10952, 540348, 19998352, 592275428, 14622792792, 309590672908, 5738394543392, 94605503014708, 1404752160252392, 18977706294953308, 235229004437967792, 2694049802004901508, 28681579910712931192

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=74.

Crossrefs

Sequence in context: A185478 A210159 A252770 * A221349 A178083 A128919

Adjacent sequences: A035819 A035820 A035821 * A035823 A035824 A035825

Keyword

nonn

Author

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

Status

approved