Numbers k such that 3*10^k + 67 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =25a(4) =61a(5) =75a(6) =99a(7) =122a(8) =145a(9) =187a(10) =292a(11) =586a(12) =1328a(13) =2457a(14) =3410a(15) =4819a(16) =5986a(17) =6638a(18) =20855a(19) =28161a(20) =47647a(21) =49387a(22) =67499a(23) =72723