Every prefix prime in base 6 (written in base 6).

Terms

a(0) =2a(1) =3a(2) =5a(3) =21a(4) =25a(5) =31a(6) =35a(7) =51a(8) =211a(9) =215a(10) =251a(11) =255a(12) =351a(13) =515a(14) =2115a(15) =2151a(16) =2155a(17) =2511a(18) =2551a(19) =2555a(20) =3515a(21) =5155a(22) =21155a(23) =21515a(24) =21551a(25) =21555a(26) =25115a(27) =25515a(28) =35155a(29) =51551