Numbers k such that (49*10^k - 67)/9 is prime.

Terms

a(0) =1a(1) =3a(2) =4a(3) =7a(4) =10a(5) =24a(6) =37a(7) =46a(8) =63a(9) =64a(10) =91a(11) =114a(12) =367a(13) =453a(14) =1156a(15) =1347a(16) =1524a(17) =7153a(18) =10893a(19) =13548a(20) =15153a(21) =43093a(22) =61167a(23) =184993