Numbers whose base-4 representation has 3 more 0's than 3's.

Terms

a(0) =64a(1) =128a(2) =257a(3) =258a(4) =260a(5) =264a(6) =272a(7) =288a(8) =320a(9) =384a(10) =513a(11) =514a(12) =516a(13) =520a(14) =528a(15) =544a(16) =576a(17) =640a(18) =768a(19) =1027a(20) =1029a(21) =1030a(22) =1033a(23) =1034a(24) =1036a(25) =1041a(26) =1042a(27) =1044a(28) =1048a(29) =1057