Numbers whose base-11 representation has the same nonzero number of 3's and 9's.

Terms

a(0) =42a(1) =102a(2) =163a(3) =223a(4) =284a(5) =344a(6) =372a(7) =383a(8) =394a(9) =416a(10) =427a(11) =438a(12) =449a(13) =460a(14) =462a(15) =463a(16) =464a(17) =466a(18) =467a(19) =468a(20) =469a(21) =470a(22) =472a(23) =482a(24) =526a(25) =586a(26) =647a(27) =707a(28) =768a(29) =828