40316253domain: NAppears in sequencesNumber of n X n 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically.at n=5A206930Number of nX6 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically.at n=5A206934Number of 6Xn 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically.at n=5A206939