-2,4,-8,16,-32,64; 0,6,-6,18,-30,66; -1,2,-4,8,-16,32; 找规律,写出n个数 ;找出关学习

问题描述:

-2,4,-8,16,-32,64; 0,6,-6,18,-30,66; -1,2,-4,8,-16,32; 找规律,写出n个数 ;找出关
学习


-2,4,-8,16,-32,64; an=(-2)^n
0,6,-6,18,-30,66; an=? 确定题目没错?
-1,2,-4,8,-16,32; an=-(-2)^(n-1)