Smallest odd number k such that sigma(x) = k has exactly n solutions.

A123523

Smallest odd number k such that sigma(x) = k has exactly n solutions.

Terms

    a(0) =1a(1) =31a(2) =347529a(3) =10773399a(4) =4104665019a(5) =77253471477a(6) =28732655133

External references