22717712domain: NAppears in sequencesa(n) = n^6 - n^5.at n=17A085539a(n) = p^5*(p-1) where p = prime(n).at n=6A138412Numbers of the form p^4*q^5 where p and q are two distinct primes.at n=24A179702Numbers k such that k^4 is the sum of two positive 5th powers.at n=17A291852a(n) = phi(n^6) = n^5*phi(n).at n=16A306411