665e7e9d26new file: oeis-research/Donovan Johnson/Smallest number m such that sigma(m) has exactly n distinct prime factors/upper-bounds.sf
2 年之前
trizen
9cb52e8fcfnew file: oeis-research/Michel Marcus/a(n) is the least integer m such that M(m) is divisible by prime(n)^2 or -1 if no such m exists/prog.sf
trizen