<image> As shown in the figure, a circular paper is to be cut several times according to the requirements to divide it into several sectors. The operation process is as follows: In the first cut, the circular paper is evenly divided into 4 sectors; in the second cut, one of the previously obtained sectors is evenly divided into 4 sectors again; thereafter, the process follows the method of the second cut. Please answer the following questions:
(1) When the number of times the circle (or sector surface) is evenly divided n is 1, 4 sectors are obtained. What about when n is 2 or 3?
(2) What is the total number of sectors obtained after the nth cut?