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找到了递推关系的规律,但找不到合理的解释,谁来解释一下?

Posted by yiyiyi4321 at 2005-11-05 10:29:52 on Problem 2680
当N为奇数a[N]=a[N-1]*2-1;
当N为偶数a[N]=a[N-1]*2+1;


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