Number of (n+1) X 2 0..2 arrays with no 2 X 2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases in its adjacent leftward or upward neighbors.
A206270
Number of (n+1) X 2 0..2 arrays with no 2 X 2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases in its adjacent leftward or upward neighbors.
Terms
- a(0) =81a(1) =306a(2) =1233a(3) =4884a(4) =19509a(5) =77580a(6) =309057a(7) =1230480a(8) =4900461a(9) =19512618a(10) =77701857a(11) =309412494a(12) =1232105853a(13) =4906303206a(14) =19537226541a(15) =77798456808a(16) =309798343185
External references
- oeis: A206270