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
Mathtuition88 
I had never heard of Lucas Numbers before. Thanks for the video!
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Yes, Lucas Numbers are interesting!
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