Number of (n+1) X 3 0..3 arrays with the number of clockwise edge increases in every 2 X 2 subblock equal to the number of counterclockwise edge increases.
A208486
Number of (n+1) X 3 0..3 arrays with the number of clockwise edge increases in every 2 X 2 subblock equal to the number of counterclockwise edge increases.
Terms
- a(0) =1448a(1) =33416a(2) =773288a(3) =17903016a(4) =414522184a(5) =9597910280a(6) =222232271912
External references
- oeis: A208486