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[数列] 转:数列和一枚

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realnumber Posted 2016-6-16 07:31 |Read mode
QQ图片20160616072909--3.png
【高中】viva~fifan(30----911) 2016-06-15 16:19:24
2个1 4个2 6个3 8个4~

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游客 Posted 2016-6-17 21:10
未命名.PNG

每段和均为2,关键就是看有几段。最后一段另外算。

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