62857domain: NAppears in sequencesNumber of bipartitions of n wherein odd parts are distinct (and even parts are unrestricted).at n=30A273225Coefficients in the expansion Product_{ n>=1 } (1-q^(2n-1))^2/(1-q^(2n))^2.at n=30A274621Sequence of pairwise relatively prime numbers of class P_7 (see comment in A275246).at n=27A275252