Numbers such that sigma(n)^2 is divisible by UnitarySigma(n)*UnitaryPhi(n).

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =14a(5) =15a(6) =30a(7) =35a(8) =42a(9) =70a(10) =78a(11) =105a(12) =190a(13) =210a(14) =348a(15) =357a(16) =418a(17) =570a(18) =714a(19) =910a(20) =1045a(21) =1144a(22) =1254a(23) =2090a(24) =2296a(25) =2730a(26) =3135a(27) =3432a(28) =4060a(29) =4522