Gøre brug af fibonaccirækken

http://en.wikipedia.org/wiki/Fibonacci_number

giver et par eksempler på anvendelsen af Fibonacci

Since the conversion factor 1.609 for miles to kilometers is close to the golden ratio (denoted φ), the decomposition of distance in miles into a sum of Fibonacci numbers becomes nearly the kilometer sum when the Fibonacci numbers are replaced by their successors. This method amounts to a radix 2 number register in golden ratio base φ being shifted. To convert from kilometers to miles, shift the register down the Fibonacci sequence instead.

det er da lidt sjovt :-)