Composite numbers k such that phi(k) divides sigma(k) - 2*k.

Terms

a(0) =6a(1) =12a(2) =28a(3) =42a(4) =60a(5) =168a(6) =456a(7) =496a(8) =828a(9) =1080a(10) =1242a(11) =1530a(12) =1560a(13) =3360a(14) =3672a(15) =4560a(16) =7320a(17) =7584a(18) =8128a(19) =11400a(20) =14784a(21) =19488a(22) =21648a(23) =33462a(24) =37536a(25) =40608a(26) =44856a(27) =48024a(28) =59520a(29) =83904