48956655199domain: NAppears in sequencesNumber of n X n 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column or nw-to-se diagonal.at n=4A206726Number of nX5 0..2 arrays avoiding the pattern z-1 z-1 z in any row, column or nw-to-se diagonal.at n=4A206731