递推公式是数列的一种表示方法,利用递推公式求通项是学习和考查数列的一个重要内容,也是递推数列后续解题的核心和基础。虽然高考的要求趋于逐年降低,但是数列通常出现在后几道题中,在难度上还会有所保留,由数列的递推公式求数列通项公式的题目在近几年的高考中仍有出现。在平时教学中,教师应对这类题目给予高度的重视。由递推公式求数列的通项,常用的方法繁多,学生掌握起来有一定的困难,本文主要是根据数列递推关系具有 Recursion formula is a representation of sequence. Using recursion formulas to find a general term is an important part of learning and examining sequences. It is also the core and foundation of subsequent recursion sequences. Although the requirements of college entrance examination tend to decrease year by year, but the series usually appear in the next few questions, the difficulty will be retained by the sequence of recursion formula to calculate the number of columns formulating the subject of the entrance examination in recent years There appear. In normal teaching, teachers should give high priority to these topics. Recursive formula for calculating the general items, commonly used in many ways, the students have some difficulties in mastering, this article is based on the serial recursion relationship with