266126

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=2A209781
• Half the number of (n+1)X4 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.at n=1A209782
• 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=7A209787
• 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=8A209787
• In base 8: a(n) sets a new record for the number of Reverse and Add! steps needed to reach a palindrome starting with a(n).at n=19A306599