48318382080domain: NAppears in sequencesLeast number whose number of divisors is A007304(n) (the n-th number that is the product of 3 distinct primes).at n=16A061299Number of divisors of n-th cyclic number.at n=15A087024Expansion of (1-x+4*x^2)/(1-2*x)^2.at n=30A167667