how about this sequence, starting with 0, 1, 1, 2,...

来源: quantnj 于 2013-02-05 12:07:53 [] [旧帖] [给我悄悄话] 阅读数 : 0 (161 bytes)
回答: 从楼下无院长的帖子想到的 由 ca981 于 2013-02-05 11:56:36

for 1st graders, my opinion is it should have no standard solution. 

take that example, an arithmetic sequence should suffice.

 

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