Numbers k where records occur for d(k^2)/d(k), where d(k) is A000005(k).

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =12a(5) =24a(6) =30a(7) =60a(8) =120a(9) =180a(10) =210a(11) =420a(12) =840a(13) =1260a(14) =2310a(15) =4620a(16) =9240a(17) =13860a(18) =27720a(19) =30030a(20) =60060a(21) =120120a(22) =180180a(23) =360360a(24) =510510a(25) =1021020a(26) =2042040a(27) =3063060a(28) =6126120a(29) =9699690