Number of 7-element ordered T_0-antichains on an unlabeled n-set; T_1-hypergraphs on 7 labeled nodes with n (not necessarily empty) distinct hyperedges (n=0,1,...,128).
A059050
Number of 7-element ordered T_0-antichains on an unlabeled n-set; T_1-hypergraphs on 7 labeled nodes with n (not necessarily empty) distinct hyperedges (n=0,1,...,128).
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =20580a(6) =9106440a(7) =1058272828a(8) =56671435220
External references
- oeis: A059050