A035816 - OEIS

%I #7 Sep 05 2023 15:15:56

%S 1,124,7688,317812,9856016,244619884,5062048280,89845298020,

%T 1396398655520,19309150041180,240550579435048,2727459472756052,

%U 28384206701341744,273049514243591756,2442767874758677048

%N Coordination sequence for lattice D*_62 (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=62.

%K nonn

%O 0,2

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