Number of (n+1) X 2 0..3 arrays with every 2 X 3 or 3 X 2 subblock having exactly two counterclockwise and two clockwise edge increases.

A206111

Number of (n+1) X 2 0..3 arrays with every 2 X 3 or 3 X 2 subblock having exactly two counterclockwise and two clockwise edge increases.

Terms

    a(0) =256a(1) =1140a(2) =6028a(3) =31756a(4) =171564a(5) =973388a(6) =5538732a(7) =31668844a(8) =182723180a(9) =1055476940a(10) =6101167404a(11) =35321975916a(12) =204551559276

External references