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

A206316

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

Terms

    a(0) =3275406a(1) =1332632711a(2) =545678293613

External references