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Czhang271828 发表于 2024-7-9 13:40 https://oeis.org/A016070 未解之谜. 看来进制没选对, 如果是 5 进制, 那可以当做竞赛题. ...
uk702 发表于 2024-7-9 17:42 求教:5 进制怎么证?
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