Number of (n+1)X5 0..2 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.

A203831

Number of (n+1)X5 0..2 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.

Terms

    a(0) =5625a(1) =151659a(2) =4238721a(3) =119606211a(4) =3383285769a(5) =95763046491

External references