'Returns the tree representation of the Prufer object.
Examples
>>> from sympy.combinatorics.prufer import Prufer
>>> Prufer([[0, 3], [1, 3], [2, 3], [3, 4], [4, 5]]).tree_repr
[[0, 3], [1, 3], [2, 3], [3, 4], [4, 5]]
>>> Prufer([1, 0, 0]).tree_repr
[[1, 2], [0, 1], [0, 3], [0, 4]]
See Also
to_tree'

@property
def tree_repr(self):

    if (self._tree_repr is None):
        self._tree_repr = self.to_tree(self._prufer_repr[:])
    return self._tree_repr
