Number of (n+1) X (n+1) 0..2 arrays with every 2 X 2 subblock having one, three or four distinct clockwise edge differences.

A209952

Number of (n+1) X (n+1) 0..2 arrays with every 2 X 2 subblock having one, three or four distinct clockwise edge differences.

Terms

    a(0) =71a(1) =12161a(2) =14922177a(3) =131724081683

External references