Numbers k such that phi(k) | sigma_11(k).

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =12a(5) =14a(6) =15a(7) =30a(8) =35a(9) =42a(10) =56a(11) =70a(12) =78a(13) =105a(14) =140a(15) =168a(16) =190a(17) =210a(18) =235a(19) =248a(20) =264a(21) =270a(22) =329a(23) =357a(24) =418a(25) =420a(26) =470a(27) =570a(28) =594a(29) =616