2. Fibonacci numbers The Fibonacci numbers are the numbers in the following integer sequence, called the Fibonacci sequence, and characterized by the fact that every number after the first two is the sum of the preceding ones. 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, ... Find the first 50 Fibonacci numbers and save them in a vector, called fib. Print the vector