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A035818
Coordination sequence for lattice D*_66 (with edges defined by l_1 norm = 1).
0
1, 132, 8712, 383372, 12655632, 334338708, 7363888664, 139100713884, 2300684695584, 33851564979364, 448681205484072, 5411871200791980, 59904484213281840, 612840192258608820, 5829554227763981880
OFFSET
0,2
LINKS
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=66.
CROSSREFS
Sequence in context: A270411 A258493 A184893 * A258394 A215546 A269042
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, J. Serra-Sagrista (jserra(AT)ccd.uab.es)
STATUS
approved