已知数列
中,
,
当
时,
是乘积
的个位数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1682310527a759ec7cca6ae20d8022cd.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89522f8accbac821246a616a49340d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31cb11a1c5f3037505bd4e12fd0322d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/728c1c7345ccca5620c26591874c301c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41ae64e37ebcddccabd64e12b0afc2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55372a17e8535ada006e2bafe2f03824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1682310527a759ec7cca6ae20d8022cd.png)
更新时间:2019-03-18 08:29:46
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【知识点】 根据数列递推公式写出数列的项
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