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2, 2, 4, 6, 11, 18, 31, 54, 96, 171, 309, 562, 1029, 1896, 3514, 6545, 12247, 23005, 43371, 82029, 155598, 295927, 564164, 1077892, 2063545, 3957761, 7603593, 14630713, 28192867, 54399529, 105097590, 203280493, 393614506, 762937782, 1480207843, 2874399615
(列表;图表;参考;听;历史;文本;内部格式)
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