def permutation(self, size=None, n=1, ndim=None, dtype='int64'):
        return self.gen(permutation, size, n, ndim=ndim, dtype=dtype)
Return ``(b, e)`` such that ``n`` == ``b**e`` if ``n`` is a
dataset/ETHPy150Open rizar/attention-lvcsr/libs/Theano/theano/tensor/raw_random.py/RandomStreamsBase.permutation--crossover with--dataset/ETHPy150Open sympy/sympy/sympy/ntheory/factor_.py/perfect_power