7785062

Appears in sequences

• Number of hierarchical models on n labeled factors or variables with linear terms forced. Also number of antichain covers of a labeled n-set.at n=6A006126
• Number of simplicial complexes with n nodes.at n=6A307249
• Triangle read by rows where T(n,k) is the number of antichains of nonempty sets covering n vertices with vertex-connectivity >= k.at n=21A327350