Composite numbers k such that number of composite d with 3 < d < k, gcd(k, d) = 1, is pi(k).

A049011

Composite numbers k such that number of composite d with 3 < d < k, gcd(k, d) = 1, is pi(k).

Terms

    a(0) =27a(1) =286a(2) =370a(3) =520a(4) =550a(5) =1332a(6) =13530a(7) =38220

External references