Number of (n+1)X4 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two.

A206192

Number of (n+1)X4 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two.

Terms

    a(0) =8304a(1) =329216a(2) =13173864a(3) =527945420a(4) =21162670972a(5) =848327900384

External references