Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 5 6 or 8 and every 3X3 column and antidiagonal sum not equal to 0 3 5 6 or 8.
A252607
Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 3 5 6 or 8 and every 3X3 column and antidiagonal sum not equal to 0 3 5 6 or 8.
Terms
- a(0) =614a(1) =1379a(2) =7031a(3) =43595a(4) =814008a(5) =18149682a(6) =264208755a(7) =20242422160
External references
- oeis: A252607