13606964

Appears in sequences

• Half the number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.at n=2A209779
• Half the number of (n+1)X4 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.at n=2A209782
• T(n,k)=Half the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.at n=12A209787