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A035819 Coordination sequence for lattice D*_68 (with edges defined by l_1 norm = 1). 0

%I

%S 1,136,9248,419288,14260416,388134888,8807231072,171389157176,

%T 2920221095296,44261088117832,604286975278752,7507398039179160,

%U 85587416923429440,901728467693644200,8833008614958340320

%N Coordination sequence for lattice D*_68 (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=68.

%K nonn

%O 0,2

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

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Last modified May 16 08:07 EDT 2021. Contains 343940 sequences. (Running on oeis4.)