Numbers whose base-8 representation has the same nonzero number of 2's and 7's.

Terms

a(0) =23a(1) =58a(2) =87a(3) =122a(4) =135a(5) =143a(6) =159a(7) =167a(8) =175a(9) =183a(10) =184a(11) =185a(12) =187a(13) =188a(14) =189a(15) =190a(16) =215a(17) =250a(18) =279a(19) =314a(20) =343a(21) =378a(22) =407a(23) =442a(24) =450a(25) =458a(26) =464a(27) =465a(28) =467a(29) =468