600838995529domain: NAppears in sequencesNumber of n X n 0..1 arrays avoiding 0 0 0 horizontally and 0 1 0 vertically.at n=6A207176Number of nX7 0..1 arrays avoiding 0 0 0 horizontally and 0 1 0 vertically.at n=6A207181Number of 7Xn 0..1 arrays avoiding 0 0 0 horizontally and 0 1 0 vertically.at n=6A207186