Ana and oeis dictionary

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Ana and oeis dictionary. Ana has invited several guests in cafe dialog for his birthday treat. Also he wants to impress his friends with his mathematical aptitude. For this chef aakash introduces ana with https://oeis.org/ the online encyclopedia of integer sequences. As ana goes through oeis discussion forum he finds following problem: Calculate the number of permutations of length n. This permut

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solution.cppC++17

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