Numbers whose base-10 representation has the same nonzero number of 5's and 9's.

Terms

a(0) =59a(1) =95a(2) =159a(3) =195a(4) =259a(5) =295a(6) =359a(7) =395a(8) =459a(9) =495a(10) =509a(11) =519a(12) =529a(13) =539a(14) =549a(15) =569a(16) =579a(17) =589a(18) =590a(19) =591a(20) =592a(21) =593a(22) =594a(23) =596a(24) =597a(25) =598a(26) =659a(27) =695a(28) =759a(29) =795