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def f(x): if x == 1: return 2 return f(x - 1) * 2 - 1 t = int(input()) while t > 0: t -= 1 x = int(input()) print(f(x))
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def f(x): if x == 1: return 2 return f(x - 1) * 2 - 1 t = int(input()) while t > 0: t -= 1 x = int(input()) print(f(x))