Numbers whose base-11 representation has the same nonzero number of 4's and 9's.

Terms

a(0) =53a(1) =103a(2) =174a(3) =224a(4) =295a(5) =345a(6) =416a(7) =466a(8) =493a(9) =504a(10) =515a(11) =526a(12) =548a(13) =559a(14) =570a(15) =581a(16) =583a(17) =584a(18) =585a(19) =586a(20) =588a(21) =589a(22) =590a(23) =591a(24) =593a(25) =603a(26) =658a(27) =708a(28) =779a(29) =829