Numbers n such that (n+1)*10^n - 1 is prime.
A174352
Numbers n such that (n+1)*10^n - 1 is prime.
Terms
- a(0) =1a(1) =4a(2) =5a(3) =17a(4) =20a(5) =28a(6) =173a(7) =181a(8) =331a(9) =575a(10) =1313a(11) =1754a(12) =4067a(13) =27314
External references
- oeis: A174352