Numbers whose base-12 representation has the same nonzero number of 3's and 11's.

Terms

a(0) =47a(1) =135a(2) =191a(3) =279a(4) =335a(5) =423a(6) =443a(7) =455a(8) =467a(9) =491a(10) =503a(11) =515a(12) =527a(13) =539a(14) =551a(15) =563a(16) =564a(17) =565a(18) =566a(19) =568a(20) =569a(21) =570a(22) =571a(23) =572a(24) =573a(25) =574a(26) =623a(27) =711a(28) =767a(29) =855