def METHOD_NAME(self):
    """Number of nodes in each ring.
    Returns
    -------
    ndarray of int
        Number of nodes in each ring, excluding the center node.
    >>> from landlab.graph import RadialGraph
    >>> graph = RadialGraph((4, 6))
    >>> graph.number_of_nodes_in_ring
    array([ 6, 12, 24, 48])
    :meta landlab: info-node, quantity
    """
    return as_id_array(self._shape[1] * 2 ** np.arange(self.number_of_rings))