66434312368domain: NAppears in sequencesT(n,k)=Number of nXk arrays containing k copies of 0..n-1 with no element plus any horizontal or vertical neighbor equal to n-1.at n=40A265663Number of 5Xn arrays containing n copies of 0..5-1 with no element plus any horizontal or vertical neighbor equal to 5-1.at n=4A265666