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Re:求此题解法。。。。

Posted by cgy4ever at 2010-05-09 17:24:53 on Problem 3761
In Reply To:Re:求此题解法。。。。 Posted by:qsort at 2010-05-09 17:15:56 
> 暴力打出前10
> 然后直接就看出来了
orz , 我在OEIS上搜了k-2的序列才看出来规律的
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