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0, 0, 1, 2, 5, 11, 23, 47, 94, 188, 376, 753, 1506, 3013, 6027, 12054, 24109, 48218, 96437, 192874, 385749, 771499, 1542998, 3085996, 6171992, 12343985, 24687971, 49375942, 98751885, 197503771, 395007542, 790015084, 1580030168, 3160060337, 6320120674
(列表;图表;参考;听;历史;文本;内部格式)
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