908849973079domain: NAppears in sequencesNumber of nX4 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column or nw-to-se diagonal.at n=6A206730Number of nX7 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column or nw-to-se diagonal.at n=3A206733