Divisible only by primes congruent to 4 mod 5.

Terms

a(0) =1a(1) =19a(2) =29a(3) =59a(4) =79a(5) =89a(6) =109a(7) =139a(8) =149a(9) =179a(10) =199a(11) =229a(12) =239a(13) =269a(14) =349a(15) =359a(16) =361a(17) =379a(18) =389a(19) =409a(20) =419a(21) =439a(22) =449a(23) =479a(24) =499a(25) =509a(26) =551a(27) =569a(28) =599a(29) =619