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

A252339

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

Terms

    a(0) =538a(1) =2242a(2) =10154a(3) =43708a(4) =184434a(5) =783852a(6) =3338572a(7) =14229718a(8) =60618068a(9) =258032046a(10) =1098638058a(11) =4679093984a(12) =19926283674a(13) =84850464484a(14) =361322860036

External references