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Sum of series with alternate signed squares of AP | Function to calculate series sum.
Driver code"
Solution in Python:

Give me a code to sum of series with alternate signed squares of AP and the other steps required?
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#Here is code to sum of series with alternate signed squares of AP and the other steps required.
 def seiresSum ( n , a ) :
	res = 0
	for i in range ( 0 , 2 * n ) :
		if ( i % 2 == 0 ) :
			res += a [ i ] * a [ i ]
		else :
			res -= a [ i ] * a [ i ]
	return res
n = 2
a = [ 1 , 2 , 3 , 4 ]
print ( seiresSum ( n , a ) )