Number of (n+2)X(3+2) 0..4 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
A251958
Number of (n+2)X(3+2) 0..4 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
Terms
- a(0) =27550a(1) =149744a(2) =2124017a(3) =30761067a(4) =458358230a(5) =6886698489a(6) =102836207351
External references
- oeis: A251958