题目

Amy, as well as her brothers, a warm welcome when returning to the village last week. A . is given B . are given C . was given D . were given 答案：C瑞士一位中学教师巴尔末从光谱数据95，1612，2521，3632…中发现了一个规律，从而得到了巴尔末公式，继而打开了光谱奥妙的大门．请你根据光谱数据的前四个数写出第n个数，为______．