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0, 1, 3, 9, 21, 51, 111, 237, 489, 995, 2017, 4059, 8151, 16341, 32721, 65483, 131013, 262083, 524221, 1048505, 2097079, 4194225, 8388525, 16777127, 33554335, 67108763, 134217625, 268435349, 536870803, 1073741711, 2147483521, 4294967165, 8589934455, 17179869045
(列表;图表;参考;听;历史;文本;内部格式)
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