找出-1,4,21,56,115,( )的规律?
尽快给我答案.
人气:406 ℃ 时间:2020-01-28 11:24:51
解答
-1=1*1*1-2
4=2*2*2-4
21=3*3*3-6
56=4*4*4-8
115=5*5*5-10
204=6*6*6-12
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