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def collatz(n):
    while n > 1:
        yield n
        if n % 2 == 0:
            n //= 2
            collatz(n)
        else:
            n = (n * 3 + 1)
            collatz(n)
    yield n
		
print('Please enter a positive integer')
n = int(input())

print('Your collatz sequence:')
print(list(collatz(n)))