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A035818 Coordination sequence for lattice D*_66 (with edges defined by l_1 norm = 1). 0

%I

%S 1,132,8712,383372,12655632,334338708,7363888664,139100713884,

%T 2300684695584,33851564979364,448681205484072,5411871200791980,

%U 59904484213281840,612840192258608820,5829554227763981880

%N Coordination sequence for lattice D*_66 (with edges defined by l_1 norm = 1).

%D J. Serra-Sagrista, Enumeration of lattice points in l_1 norm, Information Processing Letters, 76, no. 1-2 (2000), 39-44.

%F 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.

%K nonn

%O 0,2

%A _N. J. A. Sloane_, J. Serra-Sagrista (jserra(AT)ccd.uab.es)

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Last modified April 11 18:59 EDT 2021. Contains 342888 sequences. (Running on oeis4.)