The sigma(EulerPhi)-perfect numbers, where the set of f-perfect numbers for an arithmetical function f is defined in A066218.
A066226
The sigma(EulerPhi)-perfect numbers, where the set of f-perfect numbers for an arithmetical function f is defined in A066218.
Terms
- a(0) =2a(1) =88a(2) =328a(3) =5128a(4) =9075a(5) =327688a(6) =1310728a(7) =2066056a(8) =2259976a(9) =188186624a(10) =560889856a(11) =847020032a(12) =1342177288
External references
- oeis: A066226