Numbers k such that sigma(phi(k)) - phi(sigma(k)) is nonzero and divisible by sigma(k), that is A065395(k)/A000203(k) is a nonzero integer.

A092588

Numbers k such that sigma(phi(k)) - phi(sigma(k)) is nonzero and divisible by sigma(k), that is A065395(k)/A000203(k) is a nonzero integer.

Terms

    a(0) =7a(1) =327a(2) =463a(3) =497a(4) =617a(5) =691a(6) =751a(7) =1207a(8) =1633a(9) =2451a(10) =2643a(11) =3143a(12) =3337a(13) =3503a(14) =4939a(15) =5609a(16) =7093a(17) =7597a(18) =10327a(19) =14987a(20) =20427a(21) =21103a(22) =22345a(23) =22481a(24) =24739a(25) =26491a(26) =27193a(27) =28077a(28) =37753a(29) =37915

External references