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Centered Octadecagonal Number | Centered octadecagonal number function.
Formula to calculate nth centered octadecagonal number & return it into main function ..
Driver Code"
How can the above be solved in Python?

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Can you provide a code to centered Octadecagonal Number and the other steps required?
assistant
#Here is code to centered Octadecagonal Number and the other steps required.
 def center_octadecagon_num ( n ) :
	return ( 9 * n * n - 9 * n + 1 )
if __name__ == ' _ _ main _ _ ' :
	n = 3
	print ( n , " rd ▁ centered ▁ octadecagonal ▁ " + " number ▁ : ▁ " , center_octadecagon_num ( n ) )
	n = 13
	print ( n , " th ▁ centered ▁ octadecagonal ▁ " + " number ▁ : ▁ " , center_octadecagon_num ( n ) )