Number of (n+1)X3 0..3 arrays with every 2X3 or 3X2 subblock having exactly two clockwise edge increases.

A206057

Number of (n+1)X3 0..3 arrays with every 2X3 or 3X2 subblock having exactly two clockwise edge increases.

Terms

    a(0) =2184a(1) =21140a(2) =167960a(3) =1390488a(4) =11638960a(5) =96831504a(6) =805817696a(7) =6714115792a(8) =55902397592a(9) =465476937176

External references