A035824 Coordination sequence for lattice D*_78 (with edges defined by l_1 norm = 1).

1, 156, 12168, 632788, 24684816, 770545932, 20050650776, 447393464388, 8739210543648, 151827622117756, 2375502273471912, 33813163932788916, 441550716354149168, 5327219734962149868, 59738920517881797816

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=78.

Crossrefs

Sequence in context: A023903 A240005 A035838 * A252778 A006112 A239410

Adjacent sequences: A035821 A035822 A035823 * A035825 A035826 A035827

Keyword

nonn

Author

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

Status

approved