Number of (n+1) X 4 0..3 arrays with the number of clockwise edge increases in every 2 X 2 subblock equal to the number of counterclockwise edge increases.
A208487
Number of (n+1) X 4 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) =13800a(1) =773288a(2) =43689232a(3) =2473041560a(4) =140051200968
External references
- oeis: A208487