Number of (n+1) X 6 0..3 arrays with the number of clockwise edge increases in every 2 X 2 subblock equal to the number of counterclockwise edge increases.
A208489
Number of (n+1) X 6 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) =1253608a(1) =414522184a(2) =140051200968
External references
- oeis: A208489