1/4 the number of (n+1)X4 0..3 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences.

A210151

1/4 the number of (n+1)X4 0..3 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences.

Terms

    a(0) =11783a(1) =2219034a(2) =417014920a(3) =78387305947

External references