80003domain: NAppears in sequencesNumber of partitions of n with equal nonzero number of parts congruent to each of 1 and 2 (mod 3).at n=54A035539A035539 with periodic zeros stripped.at n=17A035593Expansion of Product_{k>=1} (1 + x^k)^phi(k), where phi() is the Euler totient function (A000010).at n=30A299069