Recursive perrin numbers.. # DO_NOT_EDIT_ANYTHING_ABOVE_THIS_LINEcod will be here# DO_NOT_EDIT_ANYTHING_BELOW_THIS_LINEwith open("output.txt") as r:print(r.read(), end="") DescriptionYour task is to calculate and write to a file the nth Perrin number starting from the first, second and third Perrin number recursively. The number n will be provided by the user.The name of the file you will print the nth Perrin number is output.txt and do not add any other characters besides printing the number.Assume that the number n will always be a positive integer. The Perrin formula is provided in the image below.You must handle the input taking part too, and DO NOT WRITE ANY PROMPTS for the user while taking the input.Definition: Perrin sequence is a sequence where the next number in the sequence is the sum of the two previous numbers within the sequence.Explanation: First three Perrin numbers are known: first is 3, second is 0 and third is 2. Calculation of the fourth Perrin number is as follows:4th Perrin Number = (4-2)nd Perrin Number + (4-3)st Perrin Number = 0 + 3 = 35th Perrin Number = (5-2)rd Perrin Number + (5-3)nd Perrin Number = 2 + 0 = 26th Perrin Number = (6-2)th Perrin Number + (6-3)rd Perrin Number = 3 + 2 = 5%3D%3DPn = Pn-2+ Pn-3 where P = 3, P2 = 0, P3 = 2%3DCheck the examples for further clarification. Keep in mind that we will be grading your code not just based on these examples, but other cases as well,so try to write code which can handle all possible cases.Warning 1: You are not allowed to use imports and topics that haven't been covered this semester.Warning 2: Non-recursive implementations will be detected by manual inspection and get no points. For the purposes of this question, solving it iteratively and then calling another function recursively does not count asa recursive implementation.Hint: Think about what can be your base cases and recursive case from the given formula.Examples:INPUTOUTPUT517901

# DO_NOT_EDIT_ANYTHING_ABOVE_THIS_LINE n=int(input()) l=[3,0,2] for i in range(3,n):…

Answered: Recursive perrin numbers.. #…

Recursive perrin numbers.. # DO_NOT_EDIT_ANYTHING_ABOVE_THIS_LINE cod will be here # DO_NOT_EDIT_ANYTHING_BELOW_THIS_LINE with open("output.txt") as r: print(r.read(), end="")

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

Recursive perrin numbers..

# DO_NOT_EDIT_ANYTHING_ABOVE_THIS_LINE

cod will be here

# DO_NOT_EDIT_ANYTHING_BELOW_THIS_LINE
with open("output.txt") as r:
print(r.read(), end="")