1/4 the number of (n+1)X5 0..3 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences.

A210152

1/4 the number of (n+1)X5 0..3 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences.

Terms

    a(0) =169343a(1) =115368738a(2) =78387305947

External references