Numbers k such that (52*10^k + 119)/9 is prime.

Terms

a(0) =0a(1) =1a(2) =3a(3) =4a(4) =9a(5) =12a(6) =13a(7) =15a(8) =30a(9) =37a(10) =58a(11) =67a(12) =142a(13) =355a(14) =442a(15) =660a(16) =1078a(17) =3337a(18) =5923a(19) =10204a(20) =21645a(21) =50149