找规律6 8 13 ( )68
人气：254 ℃ 时间：2020-06-20 05:06:03
解答
2的2次方+2 ＝6
2的3次方 ＝8
2的4次方-3 ＝13
2的5次方 ＝32
2的6次方+4 ＝68
2的7次方 ＝128
2的8次方-5 ＝251
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