307464domain: NAppears in sequencesT(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=30A265870Number of 3Xn arrays containing n copies of 0..3-1 with no element plus any antidiagonal neighbor equal to 3-1.at n=5A265871