Odd power perfect numbers: numbers k such that opsigma(k) = 2*k, where opsigma(k) = A033634(k).

A033289

Odd power perfect numbers: numbers k such that opsigma(k) = 2*k, where opsigma(k) = A033634(k).

Terms

    a(0) =6a(1) =264a(2) =45408a(3) =10177920a(4) =9310826880a(5) =27806077440

External references