Numbers whose base-4 representation contains exactly four 0's and three 3's.

Terms

a(0) =12303a(1) =12339a(2) =12348a(3) =12483a(4) =12492a(5) =12528a(6) =13059a(7) =13068a(8) =13104a(9) =13248a(10) =15363a(11) =15372a(12) =15408a(13) =15552a(14) =16128a(15) =16447a(16) =16591a(17) =16627a(18) =16636a(19) =17167a(20) =17203a(21) =17212a(22) =17347a(23) =17356a(24) =17392a(25) =19471a(26) =19507a(27) =19516a(28) =19651a(29) =19660