Number of (n+1)X4 0..3 arrays with no 2X2 subblock having equal diagonal elements or equal antidiagonal elements.

A203821

Number of (n+1)X4 0..3 arrays with no 2X2 subblock having equal diagonal elements or equal antidiagonal elements.

Terms

    a(0) =11664a(1) =571536a(2) =28005264a(3) =1372257936a(4) =67240638864

External references