Numbers k such that (86*10^k - 77)/9 is prime.

Terms

a(0) =2a(1) =3a(2) =8a(3) =9a(4) =12a(5) =14a(6) =27a(7) =32a(8) =50a(9) =80a(10) =98a(11) =99a(12) =194a(13) =237a(14) =338a(15) =828a(16) =830a(17) =1265a(18) =2583a(19) =3639a(20) =5232a(21) =5940a(22) =9371a(23) =10268a(24) =13424a(25) =26975a(26) =36147a(27) =60165a(28) =69260a(29) =93263