982528domain: NAppears in sequencesNumber of subsets of {1, 2, ..., n} containing n and having pairwise coprime elements; also row sums of A186972.at n=46A186973E.g.f.: -arcsin(x)*LambertW(-x).at n=8A277483Number of excursions of length n with Motzkin-steps avoiding the consecutive steps UH, HH and HD.at n=23A329700