Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.
A252465
Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.
Terms
- a(0) =570a(1) =682a(2) =1741a(3) =22832a(4) =504030a(5) =17562191a(6) =937980722a(7) =77093723656
External references
- oeis: A252465