Half the number of (n+1)X5 0..2 arrays with every 2X2 subblock having at most one duplicate clockwise edge difference.
A209947
Half the number of (n+1)X5 0..2 arrays with every 2X2 subblock having at most one duplicate clockwise edge difference.
Terms
- a(0) =14832a(1) =1845126a(2) =228881560a(3) =28414622976
External references
- oeis: A209947