In this article, we see how many labeled and unlabeled binary trees we can have with N nodes. This is related to the Catalan Numbers.

Read this article to see the number of labeled and unlabeled binary tree with N nodes

This is a companion discussion topic for the original entry at http://iq.opengenus.org/how-many-labelled-and-unlabeled-binary-tree-can-be-there-with-n-nodes/