Number of (n+2)X(1+2) 0..3 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
A251846
Number of (n+2)X(1+2) 0..3 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
Terms
- a(0) =2148a(1) =4953a(2) =15899a(3) =67209a(4) =327193a(5) =1697028a(6) =9016304a(7) =48280085a(8) =259123809a(9) =1392132935a(10) =7481800749a(11) =40211989018a(12) =216132151786
External references
- oeis: A251846