Number of (n+1) X 3 0..2 arrays with every 2 X 2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases in its adjacent leftward and upward neighbors.
A206662
Number of (n+1) X 3 0..2 arrays with every 2 X 2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases in its adjacent leftward and upward neighbors.
Terms
- a(0) =423a(1) =2691a(2) =17844a(3) =119727a(4) =815847a(5) =5593611a(6) =38594841a(7) =267189276a(8) =1854776850a(9) =12896494731a(10) =89778289281a(11) =625461045417
External references
- oeis: A206662