4-infinitary perfect numbers: numbers k such that 4-infinitary-sigma(k) = 2*k.
A074849
4-infinitary perfect numbers: numbers k such that 4-infinitary-sigma(k) = 2*k.
Terms
- a(0) =6a(1) =28a(2) =36720a(3) =222768a(4) =12646368a(5) =5154170112
External references
- oeis: A074849