Numbers k such that 9*10^k + 67 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =8a(6) =16a(7) =24a(8) =32a(9) =103a(10) =1436a(11) =6144a(12) =6472a(13) =6951a(14) =8920a(15) =9598a(16) =12028a(17) =13803a(18) =21867a(19) =23893a(20) =46140