Strongly Binary Tree

Author

Eric W. Weisstein
May 28, 2004

This notebook downloaded from http://mathworld.wolfram.com/notebooks/GraphTheory/StronglyBinaryTree.nb.

For more information, see Eric's MathWorld entry http://mathworld.wolfram.com/StronglyBinaryTree.html.

©2005 Wolfram Research, Inc. except for portions noted otherwise

Enumeration

Length/@(sbt=Select[#,StronglyBinaryTreeQ]&/@RootedTrees/@Range[12])//Timing

ShowGraphArray[First/@Partition[sbt,2],
VertexStyle->Disk[.12]]