21162579

Appears in sequences

• Number of n X n 0..2 arrays avoiding the pattern z-2 z-1 z in any row, column or nw-to-se diagonal.at n=3A207311
• Number of nX4 0..2 arrays avoiding the pattern z-2 z-1 z in any row, column or nw-to-se diagonal.at n=3A207313
• T(n,k)=Number of nXk 0..2 arrays avoiding the pattern z-2 z-1 z in any row, column or nw-to-se diagonal.at n=24A207317