Numbers k such that phi(k) < k/5.

Terms

a(0) =30030a(1) =39270a(2) =43890a(3) =46410a(4) =51870a(5) =53130a(6) =60060a(7) =78540a(8) =87780a(9) =90090a(10) =92820a(11) =103740a(12) =106260a(13) =117810a(14) =120120a(15) =131670a(16) =139230a(17) =150150a(18) =155610a(19) =157080a(20) =159390a(21) =175560a(22) =180180a(23) =185640a(24) =196350a(25) =207480a(26) =210210a(27) =212520a(28) =219450a(29) =232050