Numbers whose base-9 representation has the same nonzero number of 2's and 4's.

Terms

a(0) =22a(1) =38a(2) =103a(3) =119a(4) =166a(5) =175a(6) =193a(7) =198a(8) =199a(9) =201a(10) =203a(11) =204a(12) =205a(13) =206a(14) =211a(15) =220a(16) =229a(17) =238a(18) =265a(19) =281a(20) =326a(21) =335a(22) =342a(23) =343a(24) =345a(25) =347a(26) =348a(27) =349a(28) =350a(29) =353