478107878

Appears in sequences

• Half the number of n X n 0..3 arrays with no element equal to the average of its horizontal and vertical neighbors.at n=3A197101
• Half the number of nX4 0..3 arrays with no element equal to the average of its horizontal and vertical neighbors.at n=3A197105
• T(n,k)=Half the number of nXk 0..3 arrays with no element equal to the average of its horizontal and vertical neighbors.at n=24A197109