255451

Appears in sequences

• Number of rooted identity trees with n nodes and exactly 6 subtrees from the root.at n=10A227810
• Triangle read by rows: T(n,k) is the number of polysticks, i.e., connected nonempty subsets of edges, of the n X k flat torus, up to cyclic shifts and reflections of rows and columns; 1 <= k <= n.at n=8A385386