A035817 Coordination sequence for lattice D*_64 (with edges defined by l_1 norm = 1).

1, 128, 8192, 349568, 11190272, 286680704, 6123315200, 112173964160, 1799375912960, 25678370512000, 330122643283968, 3862436697723264, 41474426978451456, 411631804378210944, 3799040291725172736

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=64.

Crossrefs

Sequence in context: A232995 A283281 A181242 * A297373 A283697 A283129

Adjacent sequences: A035814 A035815 A035816 * A035818 A035819 A035820

Keyword

nonn

Author

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

Status

approved