Fibonacci numbers are the numbers in a sequence in which the first two elements are 0 and

Question:

Fibonacci numbers are the numbers in a sequence in which the first two elements are 0 and 1, and the value of each subsequent element is the sum of the previous two elements:
0, 1, 1, 2, 3, 5, 8, 13, ...
Write a MATLAB program in a script file that determines and displays the first 20 Fibonacci numbers.