Sum of the first N terms of the series 5 , 12 , 23 , 38. ... | Function to calculate the sum ; Driver code ; number of terms to be included in sum ; find the Sn
def calculateSum ( n ) : NEW_LINE INDENT return ( 2 * ( n * ( n + 1 ) * ( 2 * n + 1 ) // 6 ) + n * ( n + 1 ) // 2 + 2 * ( n ) ) NEW_LINE DEDENT if __name__ == " _ _ main _ _ " : NEW_LINE INDENT n = 3 NEW_LINE print ( " Sum ▁ = " , calculateSum ( n ) ) NEW_LINE DEDENT