14992384domain: NAppears in sequencesPowers k^m, m > 1, where k is an Achilles number such that A053669(k) < A006530(k).at n=19A389341Powers k^m, m > 1, where k is an Achilles number that is not a product of primorials.at n=25A389814Powers k^m, m > 1, where k is an even Achilles number.at n=29A391376