54218domain: NAppears in sequencesNumber of polynomials of degree n over GF(2) in which the degrees of all irreducible factors are distinct.at n=17A007839Molien series for A_11.at n=47A008634Number of partitions of n into at most 11 parts.at n=47A008640Expansion of Product_{k>=1} (1 - x^(6*k)) * (1 + x^k) / (1 - x^k).at n=28A280874