Power of Pow | Even Number
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Given a single integer N, your task is to find the sum of the square of first N even natural Numbers.
 

Example 1:

Input: 2
Output: 20
Explanation: 22 + 42 = 20

Example 2: 

Input: 3
Outptut: 46
Explanation: 22 + 42 + 62 = 46

 

Your Task:
You don't need to read or print anything. Your task is to complete the function sum_of_square_evenNumbers() wgich takes N as input parameter and returns the sum of first N even natural numbers.

 

Expected Time Complexity: O(1)
Expected Space Complexity: O(1)

 

Constraints:
1 <= N <= 10000

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