Fibonacci numbers have all sorts of amazing properties and links to many different kinds of mathematics. They start off with 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89 ...

Mathematicians and fans of unusual natural occurrences can celebrate 11/23 as Fibonacci Day, based on the first four numbers of his historic sequence November 23 might not sound like a day to ...