Friendly club of (first Wieferich prime)-1 and (second Wieferich prime)-1: numbers n such that sigma(n)/n = 112/39.

A239875

Friendly club of (first Wieferich prime)-1 and (second Wieferich prime)-1: numbers n such that sigma(n)/n = 112/39.

Terms

    a(0) =1092a(1) =3510a(2) =19344a(3) =316992a(4) =11504844a(5) =1308463104a(6) =335004893184

External references