Question: 
Write a python function to find the sum of squares of first n even natural numbers.


Model's Code:
def square_Sum(n):
    return sum((2 * i) ** 2 for i in range(1, n + 1))



Sample Correct Code:
def square_Sum(n):  
    return int(2*n*(n+1)*(2*n+1)/3)


Asserts:
assert square_Sum(2) == 20
assert square_Sum(3) == 56
assert square_Sum(4) == 120


Tests:
Test 1 of 3: PASS
Test 2 of 3: PASS
Test 3 of 3: PASS

Test 287 of 974: 206/287 (71.77700348432056%): success