Number of (n+1) X 4 0..2 arrays with the number of clockwise edge increases in every 2 X 2 subblock equal to two.

A205831

Number of (n+1) X 4 0..2 arrays with the number of clockwise edge increases in every 2 X 2 subblock equal to two.

Terms

    a(0) =423a(1) =3642a(2) =32106a(3) =284910a(4) =2531223a(5) =22488006a(6) =199775148a(7) =1774684842a(8) =15765175170a(9) =140047755324

External references