Number of (n+2)X(5+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 4.
A252396
Number of (n+2)X(5+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 4.
Terms
- a(0) =23364738a(1) =4246242886a(2) =851022689884
External references
- oeis: A252396