738842domain: NAppears in sequencesNumber of 6-element ordered T_0-antichains on an unlabeled n-set; T_1-hypergraphs on 6 labeled nodes with n (not necessarily empty) distinct hyperedges (n=0,1,...,64).at n=6A059049Number of 6-element T_0-antichains on a labeled n-set, n = 0, ..., 64.at n=6A059082