Harmonic mean of digits is 6.

Terms

a(0) =6a(1) =66a(2) =488a(3) =666a(4) =848a(5) =884a(6) =3999a(7) =4688a(8) =4868a(9) =4886a(10) =6488a(11) =6666a(12) =6848a(13) =6884a(14) =8468a(15) =8486a(16) =8648a(17) =8684a(18) =8846a(19) =8864a(20) =9399a(21) =9939a(22) =9993a(23) =36999a(24) =38888a(25) =39699a(26) =39969a(27) =39996a(28) =44999a(29) =46688