Number of (n+1)X(4+1) 0..3 arrays with no adjacent elements equal and with each 2X2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases.
A234782
Number of (n+1)X(4+1) 0..3 arrays with no adjacent elements equal and with each 2X2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases.
Terms
- a(0) =19652a(1) =1269036a(2) =83120724a(3) =5465582060a(4) =359793857812
External references
- oeis: A234782