Introduction to Fibonacci numbers (1,2,3,5,8,...,)
interesting questions concerning Fibonacci's:
prime Fibonacci's,Departure: given a choice in what to add - construct binary tree
occurrences in nature (sunflower seeds, golden rectangle, etc.)
Fibonacci's mod k
Certain numbers aren't there (but only a few: 23, 139, 211, 422, 461, and 761 )
* Also known as Dailey-numbers after their discoverer.