Number of (n+2)X(4+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 4.
A252395
Number of (n+2)X(4+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 4.
Terms
- a(0) =2302050a(1) =203636149a(2) =19516646285
External references
- oeis: A252395