Numbers whose base-10 representation has the same nonzero number of 5's and 8's.

Terms

a(0) =58a(1) =85a(2) =158a(3) =185a(4) =258a(5) =285a(6) =358a(7) =385a(8) =458a(9) =485a(10) =508a(11) =518a(12) =528a(13) =538a(14) =548a(15) =568a(16) =578a(17) =580a(18) =581a(19) =582a(20) =583a(21) =584a(22) =586a(23) =587a(24) =589a(25) =598a(26) =658a(27) =685a(28) =758a(29) =785