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战巡 发表于 2024-2-12 11:55 我其实知道结果,列几项之后直接看出
Aluminiumor 发表于 2024-2-12 08:28 电脑不在手边,先用手机码一下结果: 记b_n=(2+sqrt{3})^F_n (F_n表示斐波那契数列) 则a_n=(b_n+1/b_n)/2
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2025-7-21 08:07 GMT+8
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