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Given the following text description, write Python code to implement the functionality described.
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Description:
Pentagonal Pyramidal Number
function to get nth Pentagonal pyramidal number . ; Driver Program

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Python Code:
def pentagon_pyramidal(n ) : 
	 return n * n *(n + 1 ) / 2 
  n = 4 
 print(int(pentagon_pyramidal(n ) ) ) 

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