Numbers whose base-11 representation has the same nonzero number of 2's and 5's.

Terms

a(0) =27a(1) =57a(2) =148a(3) =178a(4) =247a(5) =258a(6) =280a(7) =291a(8) =297a(9) =298a(10) =300a(11) =301a(12) =303a(13) =304a(14) =305a(15) =306a(16) =307a(17) =313a(18) =324a(19) =335a(20) =346a(21) =357a(22) =390a(23) =420a(24) =511a(25) =541a(26) =607a(27) =618a(28) =627a(29) =628