Hi friends!
I’m studying about phylogenetic tree shapes. Most precisely about calculate all possible rooted bifurcatingtree shapes (not labeled). A book of Felsenstein named “Inferring Phylogenies” gives an algorithm to calculate that, but I don’t understand how to.
**The book provides a calculation as follows:**

**But my calculations does not match with following values table showed on the book.**

**can anybody help me with a step by step example??**
[1]: https://discourse.biologos.org/uploads/db1313/original/2X/3/3e3979224e6eeeb57ee514c239085be9def48bbd.jpeg
[2]: https://discourse.biologos.org/uploads/db1313/original/2X/9/9e7e74d52c09b863e96d63fb4b3cb1ec5dd4d340.jpeg