Base Fibonacci
Tony Padilla does a 'magic trick' with Fibonacci numbers and talks about Zeckendorf decompositions.
More Tony on Numberphile - https://www.youtube.com/playlist?list=PLt5AfwLFPxWL8KAJKO3WfHhJcWrJfjgfU
More Tony of Sixty Symbols (our physics channel) - https://www.youtube.com/playlist?list=PLcUY9vudNKBPJmX64Jay51cdZTKMz4ACs
Tony is a physics professor at the University of Nottingham.
His book Fantastic Numbers and Where to Find Them - https://amzn.to/3VywNyy

