Half the number of (n+1)X4 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.
A209782
Half the number of (n+1)X4 0..3 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference.
Terms
- a(0) =5074a(1) =266126a(2) =13606964a(3) =706149734a(4) =36572974507
External references
- oeis: A209782