1657999936

Appears in sequences

• Number of n X n 0..3 arrays avoiding the pattern z z+1 z in any row, column or nw-to-se diagonal.at n=3A206961
• Number of nX4 0..3 arrays avoiding the pattern z z+1 z in any row, column or nw-to-se diagonal.at n=3A206963
• T(n,k)=Number of nXk 0..3 arrays avoiding the pattern z z+1 z in any row, column or nw-to-se diagonal.at n=24A206967