Number of (n+2)X(3+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 or 4.

A252083

Number of (n+2)X(3+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 or 4.

Terms

    a(0) =295a(1) =943a(2) =3326a(3) =11186a(4) =38374a(5) =132875a(6) =457442a(7) =1580135a(8) =5473377a(9) =18930754a(10) =65456340a(11) =226502034a(12) =783890677a(13) =2712485616a(14) =9385945117a(15) =32480412447a(16) =112404447736a(17) =389000283088

External references