Number of (n+1)X6 0..3 arrays with no 2X2 subblock having equal diagonal elements or equal antidiagonal elements.

A203823

Number of (n+1)X6 0..3 arrays with no 2X2 subblock having equal diagonal elements or equal antidiagonal elements.

Terms

    a(0) =944784a(1) =252047376a(2) =67240638864

External references