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A035811
Coordination sequence for lattice D*_52 (with edges defined by l_1 norm = 1).
0
1, 104, 5408, 187512, 4878016, 101575240, 1763889504, 26278912088, 342948774272, 3983402767656, 41701747803040, 397530217856824, 3480013344595008, 28176478479561992, 212293851572113376
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=52.
CROSSREFS
Sequence in context: A007267 A300174 A250668 * A004393 A286329 A164759
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, J. Serra-Sagrista (jserra(AT)ccd.uab.es)
STATUS
approved