Numbers k such that (83*10^k - 29) / 9 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =10a(4) =28a(5) =31a(6) =32a(7) =38a(8) =68a(9) =134a(10) =158a(11) =254a(12) =311a(13) =337a(14) =392a(15) =874a(16) =2747a(17) =3502a(18) =4735a(19) =6142a(20) =14140a(21) =17095a(22) =20066a(23) =21104a(24) =26743