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1, 1, 3, 6, 11, 22, 44, 89, 177, 355, 710, 1420, 2839, 5678, 11357, 22713, 45426, 90852, 181704, 363409, 726817, 1453635, 2907270, 5814540, 11629080, 23258160, 46516320, 93032640, 186065279, 372130559, 744261118, 1488522236, 2977044472, 5954088944
(列表;图表;参考;听;历史;文本;内部格式)
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