16664508

Appears in sequences

• Half the number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having two or four distinct clockwise edge differences.at n=2A209905
• Half the number of (n+1)X4 0..3 arrays with every 2X2 subblock having two or four distinct clockwise edge differences.at n=2A209908
• T(n,k)=Half the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having two or four distinct clockwise edge differences.at n=12A209913