116875domain: NAppears in sequencesNumbers k such that S(k)=d(k), where S(k) is the Kempner function (A002034) and d(k) is the number of divisors of k (A000005).at n=35A073307a(n) = - (a(n-1) + 1) * a(n-2) with a(1) = a(2) = 1.at n=9A243004Number of partitions of 4n into at most 5 parts.at n=32A256539