Recursive perfect numbers: numbers k such that A333926(k) = 2*k.

A333927

Recursive perfect numbers: numbers k such that A333926(k) = 2*k.

Terms

    a(0) =6a(1) =28a(2) =264a(3) =1104a(4) =3360a(5) =75840a(6) =151062912a(7) =606557952a(8) =2171581440

External references