Numbers k which, for some r, are r-digit maximizers of k/phi(k).

Terms

a(0) =6a(1) =30a(2) =60a(3) =90a(4) =210a(5) =420a(6) =630a(7) =840a(8) =2310a(9) =4620a(10) =6930a(11) =9240a(12) =30030a(13) =60060a(14) =90090a(15) =510510a(16) =9699690a(17) =19399380a(18) =29099070a(19) =38798760a(20) =48498450a(21) =58198140a(22) =67897830a(23) =77597520a(24) =87297210a(25) =96996900a(26) =223092870a(27) =446185740a(28) =669278610a(29) =892371480