Numbers k such that (11^k - 1)/10 is prime.
A005808
Numbers k such that (11^k - 1)/10 is prime.
Terms
- a(0) =17a(1) =19a(2) =73a(3) =139a(4) =907a(5) =1907a(6) =2029a(7) =4801a(8) =5153a(9) =10867a(10) =20161a(11) =293831a(12) =1868983
External references
- oeis: A005808