12539372domain: NAppears in sequencesNumber of n X n 0..2 arrays avoiding the pattern z-1 z-1 z in any row or column.at n=3A207195Number of nX4 0..2 arrays avoiding the pattern z-1 z-1 z in any row or column.at n=3A207197T(n,k)=Number of nXk 0..2 arrays avoiding the pattern z-1 z-1 z in any row or column.at n=24A207201