Fibonacci sequence

Fibonacci sequence are the series of numbers where each number is addition of previous two numbers.It starts with 0 and 1. So the third number is 0+1=1 and the fourth number is 1+1=2. 

Following is an example of the series,

 

0, 1, 1, 2, 3, 5, 8, 13, 21, ...

 

Let us write an python program to generate the series.

  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

lenghtofseries = int(input("Please enter the length of the series ")) a, b = 0, 1 count = 0 if lenghtofseries <= 0: print("Length of the must be a positive number") elif lenghtofseries == 1: print(a) else: print("Fibonacci sequence:") while count < lenghtofseries: print(a) c = a + b a = b b = c count += 1

The output of the program is,

Please enter the length of the series 11
Fibonacci sequence:
0
1
1
2
3
5
8
13
21
34
55