a(n) is the smallest prime greater than 4(10^n - 1)/9.
A099658
a(n) is the smallest prime greater than 4(10^n - 1)/9.
Terms
- a(0) =2a(1) =5a(2) =47a(3) =449a(4) =4447a(5) =44449a(6) =444449a(7) =4444469a(8) =44444453a(9) =444444457a(10) =4444444447a(11) =44444444497a(12) =444444444461
External references
- oeis: A099658