Numbers whose base-8 representation has 2 more 0's than 7's.

Terms

a(0) =64a(1) =128a(2) =192a(3) =256a(4) =320a(5) =384a(6) =513a(7) =514a(8) =515a(9) =516a(10) =517a(11) =518a(12) =520a(13) =528a(14) =536a(15) =544a(16) =552a(17) =560a(18) =576a(19) =640a(20) =704a(21) =768a(22) =832a(23) =896a(24) =1025a(25) =1026a(26) =1027a(27) =1028a(28) =1029a(29) =1030