Fibonacci numbers: F(n) = F(n-1) + F(n-2) with F(0) = 0 and F(1) = 1. <https://oeis.org/A000045>
太陽花、小松果 、Fibonacci numbers 筆記到參考資料中 <https://docs.google.com/presentation/d/1-j2NP8NQBFxsVHqNeUPp70Az1vKByMU3YlRvyA7T8vg/edit>
