[数列] a+b

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17 Threads	42 Posts	302 Credits

student_qwh Posted 2017-11-30 20:57 |Read mode

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kuing Posted 2017-11-30 21:36

易知周期为3，计算前三项的和和积就是了

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17 Threads	42 Posts	302 Credits

Author| student_qwh Posted 2017-12-1 19:29

46+11根号5吧

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2025-5-31 10:32 GMT+8

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