428676

Appears in sequences

• Half the number of (n+1) X 2 0..2 arrays with every 2 X 2 subblock having exactly one duplicate clockwise edge difference.at n=5A209789
• Half the number of (n+1)X7 0..2 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.at n=0A209794
• T(n,k)=Half the number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.at n=15A209796
• T(n,k)=Half the number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.at n=20A209796