Find the sum of the first Nth Centered Pentadecagonal Number | Function to find the Centered_Pentadecagonal number ; Formula to calculate N - th Centered_Pentadecagonal number ; Function to find the sum of the first N Centered_Pentadecagonal numbers ; Variable to store the sum ; Driver code
def Centered_Pentadecagonal_num ( n ) : NEW_LINE INDENT return ( 15 * n * n - 15 * n + 2 ) // 2 NEW_LINE DEDENT def sum_Centered_Pentadecagonal_num ( n ) : NEW_LINE INDENT summ = 0 NEW_LINE for i in range ( 1 , n + 1 ) : NEW_LINE INDENT summ += Centered_Pentadecagonal_num ( i ) NEW_LINE DEDENT return summ NEW_LINE DEDENT if __name__ == ' _ _ main _ _ ' : NEW_LINE INDENT n = 5 NEW_LINE print ( sum_Centered_Pentadecagonal_num ( n ) ) NEW_LINE DEDENT