Numbers k such that (11*10^k - 137)/9 is prime.

Terms

a(0) =2a(1) =5a(2) =21a(3) =23a(4) =47a(5) =75a(6) =107a(7) =110a(8) =188a(9) =261a(10) =617a(11) =872a(12) =965a(13) =2735a(14) =10145a(15) =12572a(16) =13364a(17) =14570a(18) =195350