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

A205828

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

Terms

    a(0) =30a(1) =630a(2) =32106a(3) =3875376a(4) =1105752330a(5) =745699860222

External references