Half the number of (n+1)X6 0..3 arrays with every 2X2 subblock having at most one duplicate clockwise edge difference.
A210297
Half the number of (n+1)X6 0..3 arrays with every 2X2 subblock having at most one duplicate clockwise edge difference.
Terms
- a(0) =4402192a(1) =9694276684
External references
- oeis: A210297