586218384domain: NAppears in sequencesNumber of nX3 arrays containing 3 copies of 0..n-1 with no element plus any horizontal or vertical neighbor equal to n-1.at n=5A265661T(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=33A265663