Number of (n+2)X(5+2) 0..3 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
A251850
Number of (n+2)X(5+2) 0..3 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
Terms
- a(0) =327193a(1) =10462787a(2) =458278940a(3) =18030121976a(4) =731506077621
External references
- oeis: A251850