491471001691domain: NAppears in sequencesNumber of nX4 0..3 arrays avoiding the pattern z-2 z-1 z in any row, column or nw-to-se diagonal.at n=4A206896Number of nX5 0..3 arrays avoiding the pattern z-2 z-1 z in any row, column or nw-to-se diagonal.at n=3A206897