Number of (n+1)X3 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two, and every 2X2 determinant nonzero.

A205992

Number of (n+1)X3 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two, and every 2X2 determinant nonzero.

Terms

    a(0) =92a(1) =498a(2) =2712a(3) =14866a(4) =81278a(5) =445352a(6) =2436706a(7) =13344256a(8) =73036756a(9) =399888660a(10) =2188990738a(11) =11984113612a(12) =65604360312a(13) =359154388466

External references