Number of (n+1) X (1+1) 0..3 arrays with no adjacent elements equal and with each 2 X 2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases.
A234779
Number of (n+1) X (1+1) 0..3 arrays with no adjacent elements equal and with each 2 X 2 subblock having the number of clockwise edge increases equal to the number of counterclockwise edge increases.
Terms
- a(0) =76a(1) =484a(2) =3084a(3) =19652a(4) =125228a(5) =797988a(6) =5085004a(7) =32403076a(8) =206481516a(9) =1315758308a(10) =8384382092a(11) =53427641412a(12) =340455961516
External references
- oeis: A234779