Primary pseudoperfect numbers: numbers n > 1 such that 1/n + sum 1/p = 1, where the sum is over the primes p | n.
A054377
Primary pseudoperfect numbers: numbers n > 1 such that 1/n + sum 1/p = 1, where the sum is over the primes p | n.
Terms
- a(0) =2a(1) =6a(2) =42a(3) =1806a(4) =47058a(5) =2214502422a(6) =52495396602
External references
- oeis: A054377