47457domain: NAppears in sequencesNumber of (w,x,y,z) with all terms in {1,...,n} and w >= (geometric mean of x,y,z).at n=17A212142E.g.f. satisfies: A'(x) = A(x) * A(x^2).at n=9A294638Odd composites k such that sigma(k) has the same powerful part as k, where sigma is the sum of divisors function.at n=37A386425