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

A206315

Number of (n+1)X6 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) =418468a(1) =77132181a(2) =14309749540

External references