Primes that do not contain any other prime as a proper substring.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =11a(5) =19a(6) =41a(7) =61a(8) =89a(9) =101a(10) =109a(11) =149a(12) =181a(13) =401a(14) =409a(15) =449a(16) =491a(17) =499a(18) =601a(19) =691a(20) =809a(21) =881a(22) =991a(23) =1009a(24) =1049a(25) =1069a(26) =1481a(27) =1609a(28) =1669a(29) =1699