Check out this video on Lucas Numbers:

Lucas Numbers are an interesting generalization of the famous Fibonacci Numbers!

**Featured book:**

Blockhead: The Life of Fibonacci

Also, check out this book by **Matt Parker**, i.e. the guy in the video above!

Things to Make and Do in the Fourth Dimension: A Mathematician’s Journey Through Narcissistic Numbers, Optimal Dating Algorithms, at Least Two Kinds of Infinity, and More