Number of (n+2)X(6+2) 0..3 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
A251851
Number of (n+2)X(6+2) 0..3 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
Terms
- a(0) =1697028a(1) =93874605a(2) =6885655911a(3) =446202017757
External references
- oeis: A251851