24423domain: NAppears in sequencesNumber of powerful numbers not exceeding 2^n.at n=27A062762n^3 + n-th cubefree number.at n=28A180499Composite squarefree numbers k such that Sum_{i=1..j} (p_i)^k mod k = 0, where p_i is one of the j prime divisors of k.at n=3A295483