Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.

A252332

Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.

Terms

    a(0) =39981a(1) =40178a(2) =180469a(3) =632453a(4) =3999229a(5) =19701604a(6) =76990025a(7) =492999163a(8) =2520993313a(9) =10349882135a(10) =66879484623a(11) =346316367984

External references