Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 1 3 6 or 7.
A252320
Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 1 3 6 or 7.
Terms
- a(0) =56052a(1) =25875a(2) =214325a(3) =1741936a(4) =14105723a(5) =115183853a(6) =937981280a(7) =7634090167a(8) =62282796267a(9) =507708324342
External references
- oeis: A252320