Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 4 6 or 7.
A252102
Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 4 6 or 7.
Terms
- a(0) =21457a(1) =21405a(2) =86550a(3) =329544a(4) =1704334a(5) =7637420a(6) =31734323a(7) =169483164a(8) =790459932a(9) =3479889673a(10) =18706391466a(11) =91043129368a(12) =418223127716
External references
- oeis: A252102