Minimal value w such that A051953(w) = w - phi(w) is prime and w has n prime divisors.
A051999
Minimal value w such that A051953(w) = w - phi(w) is prime and w has n prime divisors.
Terms
- a(0) =4a(1) =15a(2) =255a(3) =5865a(4) =170085a(5) =5437705a(6) =226473065a(7) =10380578845a(8) =494390700895
External references
- oeis: A051999