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A035813 Coordination sequence for lattice D*_56 (with edges defined by l_1 norm = 1). 0

%I

%S 1,112,6272,234192,6560512,147095984,2750165376,44107714576,

%T 619570628096,7744518260976,87234261025408,894539809017680,

%U 8421733435019520,73313390970875440,593725756425591680

%N Coordination sequence for lattice D*_56 (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=56.

%K nonn

%O 0,2

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

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Last modified September 20 16:30 EDT 2019. Contains 327242 sequences. (Running on oeis4.)