Numbers that contain a 4.

Terms

a(0) =4a(1) =14a(2) =24a(3) =34a(4) =40a(5) =41a(6) =42a(7) =43a(8) =44a(9) =45a(10) =46a(11) =47a(12) =48a(13) =49a(14) =54a(15) =64a(16) =74a(17) =84a(18) =94a(19) =104a(20) =114a(21) =124a(22) =134a(23) =140a(24) =141a(25) =142a(26) =143a(27) =144a(28) =145a(29) =146