Numbers whose base-7 representation has the same nonzero number of 0's and 2's.

Terms

a(0) =14a(1) =51a(2) =63a(3) =99a(4) =101a(5) =102a(6) =103a(7) =104a(8) =105a(9) =119a(10) =126a(11) =133a(12) =140a(13) =149a(14) =161a(15) =198a(16) =210a(17) =247a(18) =259a(19) =296a(20) =308a(21) =352a(22) =358a(23) =360a(24) =361a(25) =362a(26) =363a(27) =366a(28) =373a(29) =380