Fibonacci number 0: 0
Fibonacci number 1: 1
Fibonacci number 2: 1
Fibonacci number 3: 2
Fibonacci number 4: 3
Fibonacci number 5: 5
Fibonacci number 6: 8
Fibonacci number 7: 13
Fibonacci number 8: 21
Fibonacci number 9: 34
Fibonacci number 10: 55
Fibonacci number 11: 89
Fibonacci number 12: 144
Fibonacci number 13: 233
Fibonacci number 14: 377
Fibonacci number 15: 610
Fibonacci number 16: 987
Fibonacci number 17: 1597
Fibonacci number 18: 2584
Fibonacci number 19: 4181
Fibonacci number 20: 6765