Numbers k such that (89*10^k - 539)/9 is prime.

Terms

a(0) =2a(1) =3a(2) =5a(3) =8a(4) =9a(5) =18a(6) =20a(7) =26a(8) =111a(9) =141a(10) =162a(11) =236a(12) =312a(13) =383a(14) =2093a(15) =3926a(16) =3981a(17) =4935a(18) =17126a(19) =32070a(20) =64608a(21) =86802