Number of (n+2)X(n+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 or 4.
A252024
Number of (n+2)X(n+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 or 4.
Terms
- a(0) =213a(1) =323a(2) =2206a(3) =29781a(4) =672903a(5) =23454804a(6) =1251157837a(7) =102663081633
External references
- oeis: A252024