Number of (n+1) X 2 0..3 arrays with the number of clockwise edge increases in 2 X 2 subblocks nondecreasing, and counterclockwise edge increases nonincreasing, rightwards and downwards.
A206102
Number of (n+1) X 2 0..3 arrays with the number of clockwise edge increases in 2 X 2 subblocks nondecreasing, and counterclockwise edge increases nonincreasing, rightwards and downwards.
Terms
- a(0) =256a(1) =2292a(2) =15564a(3) =95408a(4) =574364a(5) =3472540a(6) =21122008a(7) =129099360a(8) =792188532a(9) =4877980340a(10) =30132023264a(11) =186677124664
External references
- oeis: A206102