Number of (n+1) X 3 0..6 arrays with every 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements.

A203881

Number of (n+1) X 3 0..6 arrays with every 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements.

Terms

    a(0) =8281a(1) =254359a(2) =7501753a(3) =222645367a(4) =6601376089a(5) =195759462871

External references