Number of (n+1)X6 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two.

A206194

Number of (n+1)X6 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two.

Terms

    a(0) =559788a(1) =108363344a(2) =21162670972

External references