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A035812 Coordination sequence for lattice D*_54 (with edges defined by l_1 norm = 1). 0

%I #7 Sep 05 2023 15:14:19

%S 1,108,5832,209988,5672592,122653980,2211553368,34208719092,

%T 463476372768,5588323254732,60724672249320,600778137474468,

%U 5457607130811312,45848471510756988,358366157766535032

%N Coordination sequence for lattice D*_54 (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=54.

%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 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)