222990

Appears in sequences

• Number of n X n 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 antidiagonally.at n=3A229365
• Number of nX4 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 antidiagonally.at n=3A229368
• T(n,k)=Number of nXk 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 antidiagonally.at n=24A229372