Numbers with exactly 2 4's in base 5 expansion.

Terms

a(0) =24a(1) =49a(2) =74a(3) =99a(4) =104a(5) =109a(6) =114a(7) =119a(8) =120a(9) =121a(10) =122a(11) =123a(12) =149a(13) =174a(14) =199a(15) =224a(16) =229a(17) =234a(18) =239a(19) =244a(20) =245a(21) =246a(22) =247a(23) =248a(24) =274a(25) =299a(26) =324a(27) =349a(28) =354a(29) =359