A035827 Coordination sequence for lattice D*_84 (with edges defined by l_1 norm = 1).

1, 168, 14112, 790328, 33200832, 1116022152, 31270754144, 751295258136, 15800653486464, 295529872503656, 4977542380850592, 76262444439584760, 1071822174138228800, 13915770164927528520, 167907946699820252640

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=84.

Crossrefs

Sequence in context: A115222 A290152 A282586 * A075920 A181202 A076006

Adjacent sequences: A035824 A035825 A035826 * A035828 A035829 A035830

Keyword

nonn

Author

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

Status

approved