Number of (n+1) X 4 0..6 arrays with every 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements.

A203882

Number of (n+1) X 4 0..6 arrays with every 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements.

Terms

    a(0) =107653a(1) =7501753a(2) =543848893a(3) =39572771665

External references