| nRootedShapes {TreeTools} | R Documentation |
Number of rooted / unrooted tree shapes
Description
nRootedShapes and nUnrootedShapes give the number of (un)rooted binary
trees on n unlabelled leaves.
Usage
nRootedShapes
nUnrootedShapes
Format
An object of class integer64 of length 55.
An object of class integer64 of length 60.
Source
nRootedShapes corresponds to the Wedderburn-Etherington numbers,
OEIS A001190
nUnrootedShapes is OEIS A000672
[Package TreeTools version 1.12.0 Index]