Composite numbers which in base 6 contain their largest proper factor as a substring.

Terms

a(0) =9a(1) =403a(2) =8383a(3) =9287a(4) =14299a(5) =15403a(6) =16459a(7) =17543a(8) =19291a(9) =20989a(10) =25807a(11) =26743a(12) =30301a(13) =68191a(14) =96307a(15) =111277a(16) =120059a(17) =121903a(18) =158299a(19) =166391a(20) =195583a(21) =221443a(22) =238603a(23) =248551a(24) =292499a(25) =317131a(26) =356879a(27) =403927a(28) =421901a(29) =422419