Recorded 13 March 2024. Terrence George of the University of California, Los Angeles, presents "Introduction to cluster algebras (Part 2)" at IPAM's Geometry, Statistical Mechanics, and Integrability Tutorials. Abstract: We will discuss the Laurent phenomenon for cluster algebras, focusing on the octahedron and related recurrences. Learn more online at: https://www.ipam.ucla.edu/programs/workshops/geometry-statistical-mechanics-and-integrability-tutorials/