Number of (n+1)X7 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two.

A206195

Number of (n+1)X7 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two.

Terms

    a(0) =4596072a(1) =1966171084a(2) =848327900384

External references