2 search results - page 1 / 1 » From Motzkin to Catalan permutations |
DM
2000
13 years 4 months ago
2000
For every integer j
EJC
2006
13 years 4 months ago
2006
Abstract. A leaf of a plane tree is called an old leaf if it is the leftmost child of its parent, and it is called a young leaf otherwise. In this paper we enumerate plane trees wi...