122871278

Appears in sequences

• Half the number of (n+1)X3 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.at n=4A209781
• Half the number of (n+1)X6 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.at n=1A209784
• 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=16A209787
• 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=19A209787