Number of (n+2)X(1+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 4.
A252392
Number of (n+2)X(1+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 4.
Terms
- a(0) =2205a(1) =21544a(2) =224346a(3) =2302050a(4) =23364738a(5) =237415904a(6) =2418956843a(7) =24645111392a(8) =250920865658
External references
- oeis: A252392