A035827 - OEIS

%I #7 Sep 05 2023 15:19:58

%S 1,168,14112,790328,33200832,1116022152,31270754144,751295258136,

%T 15800653486464,295529872503656,4977542380850592,76262444439584760,

%U 1071822174138228800,13915770164927528520,167907946699820252640

%N Coordination sequence for lattice D*_84 (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=84.

%K nonn

%O 0,2

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