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[数列] 一类数列

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青青子衿 Posted 2014-1-19 13:04 |Read mode
$a_n=\frac{S_n-n}{S_{n-1}}$
$a_1=3$
能求吗?
谁会用Mathematica代出它的前20项?

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战巡 Posted 2014-1-19 16:20
17.jpg
巨坑无比

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 Author| 青青子衿 Posted 2014-1-19 16:22
回复 2# 战巡
谢谢!!

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