A035826 Coordination sequence for lattice D*_82 (with edges defined by l_1 norm = 1).

1, 164, 13448, 735212, 30150416, 989374772, 27063010712, 634754375804, 13032761962016, 237979582489028, 3913291362389672, 58538327243118860, 803284881791282480, 10183280170264971860, 119978383321782198200

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=82.

Crossrefs

Sequence in context: A264241 A229369 A229388 * A238773 A289332 A300057

Adjacent sequences: A035823 A035824 A035825 * A035827 A035828 A035829

Keyword

nonn

Author

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

Status

approved