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A035825 Coordination sequence for lattice D*_80 (with edges defined by l_1 norm = 1). 0

%I #7 Sep 05 2023 15:19:31

%S 1,160,12800,682720,27315200,874496032,23338104320,534067024480,

%T 10698844067840,190617057780640,3058431999744512,44642243043558880,

%U 597778600580572160,7395049289720822560,85027230683021319680

%N Coordination sequence for lattice D*_80 (with edges defined by l_1 norm = 1).

%H Joan Serra-Sagrista, <a href="http://dx.doi.org/10.1016/S0020-0190(00)00119-8">Enumeration of lattice points in l_1 norm</a>, Inf. Proc. Lett. 76 (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=80.

%K nonn

%O 0,2

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

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Last modified March 28 11:46 EDT 2024. Contains 371241 sequences. (Running on oeis4.)