Number of (n+1)X7 0..3 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.

A203794

Number of (n+1)X7 0..3 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.

Terms

    a(0) =1882384a(1) =345682576a(2) =72168659104

External references