Number of (n+1) X 2 0..3 arrays with every 2 X 3 or 3 X 2 subblock having no more than four equal edges, and new values 0..3 introduced in row major order.

A206514

Number of (n+1) X 2 0..3 arrays with every 2 X 3 or 3 X 2 subblock having no more than four equal edges, and new values 0..3 introduced in row major order.