Half the number of (n+1) X 3 0..2 arrays with every 2 X 2 subblock having at most one duplicate clockwise edge difference.
A209945
Half the number of (n+1) X 3 0..2 arrays with every 2 X 2 subblock having at most one duplicate clockwise edge difference.
Terms
- a(0) =258a(1) =4975a(2) =95794a(3) =1845126a(4) =35537484a(5) =684469520a(6) =13183187396a(7) =253914272972
External references
- oeis: A209945