Number of (n+1) X 7 0..3 arrays with every 2 X 2 subblock having nonzero determinant and having the same number of clockwise edge increases as its horizontal and vertical neighbors.

A205766

Number of (n+1) X 7 0..3 arrays with every 2 X 2 subblock having nonzero determinant and having the same number of clockwise edge increases as its horizontal and vertical neighbors.

Terms

    a(0) =3490700a(1) =1336717872a(2) =545700470559

External references