Number of (n+2)X(n+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
A251811
Number of (n+2)X(n+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
Terms
- a(0) =345a(1) =538a(2) =1754a(3) =22922a(4) =504148a(5) =17562309a(6) =937980816a(7) =77093723774
External references
- oeis: A251811