8138711727domain: NAppears in sequencesNumber of n X n 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically.at n=6A206930Number of nX7 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically.at n=6A206935Number of 7Xn 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically.at n=6A206940