Primitive e-semiproper perfect numbers: powerful numbers k for which A323309(k) = 2*k.
A391282
Primitive e-semiproper perfect numbers: powerful numbers k for which A323309(k) = 2*k.
Terms
- a(0) =36a(1) =1800a(2) =2700a(3) =238492800
External references
- oeis: A391282