87711domain: NAppears in sequencesWeighted count of partitions with distinct parts.at n=50A005895a(n) = (6/n^3) * Sum_{d|n} moebius(n/d)*binomial(2*d,d).at n=13A268592a(n) = Sum_{k=1..n} sigma_3(k) * floor(n/k).at n=22A356043Expansion of g^3/(1 - x*g)^2, where g = 1+x*g^3 is the g.f. of A001764.at n=7A391174