A005172
Sequences linked to this entry ?
-
A094262: Triangle read by rows: T(n,k) is the number of rooted trees with k nodes which are disjoint sets of labels with union {1..n}. If a node has an empty s…
match row sums
1 · 1, 2, 1 · 1, 6, 12, 10, 3 … Σ 1, 4, 32, 416, 7552, 176128, 5018624, …