Number of (n+2)X(3+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 4.

A252394

Number of (n+2)X(3+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 4.

Terms

    a(0) =224346a(1) =9807871a(2) =454970982a(3) =19516646285a(4) =851022689884

External references