Numbers k such that phi(k) | sigma_15(k).

Terms

a(0) =1a(1) =2a(2) =3a(3) =6a(4) =12a(5) =14a(6) =15a(7) =30a(8) =35a(9) =38a(10) =42a(11) =46a(12) =54a(13) =56a(14) =70a(15) =78a(16) =87a(17) =95a(18) =105a(19) =114a(20) =126a(21) =134a(22) =135a(23) =138a(24) =140a(25) =147a(26) =161a(27) =168a(28) =174a(29) =182