A153096
Table T(n,3) read by rows: T(n,1)*T(n,2)^n*(T(n,2)^n-1)+T(n,3) is the smallest possible prime with 1
1, 2, 1, 1, 2, -1, 1, 3, -1, 1, 2, -1, 1, 2, -1, 1, 3, -1, 1, 3, -1, 1, 5, 1, 1, 2, -1, 1, 2, -1, 4, 2, -1, 1, 3, 1, 2, 8, 1, 1, 7, -1, 1, 5, -1, 1, 4, 1, 4, 2, -1, 1, 2, -1, 1, 4, -1, 1, 3, -1, 3, 6, -1
Offset: 1
Examples
1*2^1*(2^1-1)+1=3 prime so A(n,1)=1,A(n,2)=2,A(n,3)=1
Links
- Pierre CAMI, The first 1000 rows of the table