Number of (n+1)X6 0..2 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences.
A209957
Number of (n+1)X6 0..2 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences.
Terms
- a(0) =287559a(1) =119198607a(2) =49124545369
External references
- oeis: A209957