There are

(and possibly some waiting for verification)

**23 statistics**on**Ordered trees**in the database:(and possibly some waiting for verification)

St000084Ordered trees ⟶ ℤ

The number of subtrees.

St000085Ordered trees ⟶ ℤ

The number of linear extensions of the tree.

St000094Ordered trees ⟶ ℤ

The depth of an ordered tree.

St000166Ordered trees ⟶ ℤ

The depth minus 1 of an ordered tree.

St000167Ordered trees ⟶ ℤ

The number of leaves of an ordered tree.

St000168Ordered trees ⟶ ℤ

The number of internal nodes of an ordered tree.

St000328Ordered trees ⟶ ℤ

The maximum number of child nodes in a tree.

St000397Ordered trees ⟶ ℤ

The Strahler number of a rooted tree.

St000400Ordered trees ⟶ ℤ

The path length of an ordered tree.

St000410Ordered trees ⟶ ℤ

The tree factorial of an ordered tree.

St000413Ordered trees ⟶ ℤ

The number of ordered trees with the same underlying unordered tree.

St000415Ordered trees ⟶ ℤ

The size of the automorphism group of the rooted tree underlying the ordered tree.

St000416Ordered trees ⟶ ℤ

The number of inequivalent increasing trees of an ordered tree.

St000417Ordered trees ⟶ ℤ

The size of the automorphism group of the ordered tree.

St000521Ordered trees ⟶ ℤ

The number of distinct subtrees of an ordered tree.

St000522Ordered trees ⟶ ℤ

The number of 1-protected nodes of a rooted tree.

St000523Ordered trees ⟶ ℤ

The number of 2-protected nodes of a rooted tree.

St000679Ordered trees ⟶ ℤ

The pruning number of an ordered tree.

St000700Ordered trees ⟶ ℤ

The protection number of an ordered tree.

St000973Ordered trees ⟶ ℤ

The length of the boundary of an ordered tree.

St000974Ordered trees ⟶ ℤ

The length of the trunk of an ordered tree.

St000975Ordered trees ⟶ ℤ

The length of the boundary minus the length of the trunk of an ordered tree.

St001058Ordered trees ⟶ ℤ

The breadth of the ordered tree.