Numbers n such that phi(n) = pi(n), i.e., A000010(n) = A000720(n).

A037171

Numbers n such that phi(n) = pi(n), i.e., A000010(n) = A000720(n).

Terms

    a(0) =2a(1) =3a(2) =4a(3) =8a(4) =10a(5) =14a(6) =20a(7) =90

External references