Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 4 6 or 7.
A252268
Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 4 6 or 7.
Terms
- a(0) =6330a(1) =47094a(2) =420420a(3) =3410622a(4) =27565694a(5) =225314758a(6) =1834743688a(7) =14935638513a(8) =121853394325a(9) =993165752030
External references
- oeis: A252268