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Sum of series 1 * 1 ! + 2 * 2 ! + …… . . + n * n ! | Python program to find sum of the series ..
Function to calculate required series.
Drivers code"
Solution in Python:
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#Here is code to sum of series 1 * 1 ! + 2 * 2 ! + …… .
 def factorial ( n ) :
	res = 1
	for i in range ( 2 , n + 1 ) :
		res = res * i
	return res
def calculateSeries ( n ) :
	return factorial ( n + 1 ) - 1
n = 3
print ( calculateSeries ( n ) )