For each primary pseudoperfect number n, this sequence gives the sum of (n/p + 1)/p for every prime divisor p of n.

A270816

For each primary pseudoperfect number n, this sequence gives the sum of (n/p + 1)/p for every prime divisor p of n.

Terms

    a(0) =1a(1) =3a(2) =17a(3) =691a(4) =17521a(5) =824473683a(6) =19579678305

External references