Numbers n such that sigma(n) = 14*phi(n) (where sigma=A000203, phi=A000010).

Terms

a(0) =420a(1) =2730a(2) =5940a(3) =12540a(4) =24024a(5) =38610a(6) =48360a(7) =66528a(8) =77490a(9) =81510a(10) =133920a(11) =140448a(12) =141372a(13) =156420a(14) =163590a(15) =282720a(16) =284580a(17) =298452a(18) =348348a(19) =498420a(20) =600780a(21) =681912a(22) =701220a(23) =771420a(24) =792480a(25) =901530a(26) =918918a(27) =1016730a(28) =1052220a(29) =1150968