278125200domain: NAppears in sequencesNumber of nX2 arrays containing 2 copies of 0..n-1 with no element plus any antidiagonal neighbor equal to n-1.at n=6A265867T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with no element plus any antidiagonal neighbor equal to n-1.at n=34A265870