Numbers whose set of base-13 digits is {3,4}.

Terms

a(0) =3a(1) =4a(2) =42a(3) =43a(4) =55a(5) =56a(6) =549a(7) =550a(8) =562a(9) =563a(10) =718a(11) =719a(12) =731a(13) =732a(14) =7140a(15) =7141a(16) =7153a(17) =7154a(18) =7309a(19) =7310a(20) =7322a(21) =7323a(22) =9337a(23) =9338a(24) =9350a(25) =9351a(26) =9506a(27) =9507a(28) =9519a(29) =9520