{--
Today's problem is inspired by http://rosalind.info/problems/fibo/

Fibonacci Numbers solved by 2850 as of February 8th, 2017

Problem

The Fibonacci numbers 0,1,1,2,3,5,8,13,21,34,... are generated by the following 
simple rule

F(0) = 0
F(1) = 1
F(n) = F(n-1) + F(n-2) for n > 1

Given: A positive integer n <= 25

Return: The value of F(n)
--}

sample :: Integer
sample = 6
sample :: Integer
sample = 6
sample = 6