Self-Avoiding Hexagonal Branching

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This Demonstration starts with a single branch and continues drawing branches at the ends of each previous branch. Going clockwise, branches are added except when a branch would collide with the end of an existing branch. Each step shows the result of attempting to add a branch to the end of each of the branches from the previous step.
Contributed by: Eric James Parfitt (October 2015)
Open content licensed under CC BY-NC-SA
Snapshots
Details
This pattern can easily be drawn by hand and looks a bit like a fractal. The (almost) space-filling lattice of hexagons also resembles the structure of the nanomaterial graphene. Here is a link to a video of the branches being added one at a time in a circle.
Permanent Citation
"Self-Avoiding Hexagonal Branching"
http://demonstrations.wolfram.com/SelfAvoidingHexagonalBranching/
Wolfram Demonstrations Project
Published: October 13 2015