3814387801domain: NAppears in sequencesNumber of nX4 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal.at n=5A207224Number of nX6 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal.at n=3A207226