415949940602domain: NAppears in sequencesNumber of nX3 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal.at n=6A207474Number of nX7 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal.at n=2A207478