Number of (n+2)X(4+2) 0..4 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
A251959
Number of (n+2)X(4+2) 0..4 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
Terms
- a(0) =101307a(1) =1201953a(2) =30761067a(3) =736975310a(4) =18033590706a(5) =446277561777
External references
- oeis: A251959