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2, 3, 6, 10, 20, 36, 74, 137, 282, 536, 1100, 2117, 4332, 8406, 17144, 33464, 68058, 133398, 270700, 532230, 1078080, 2124714, 4297434, 8485470, 17141764, 33898436, 68409684, 135450295, 273114928, 541320762, 1090693986, 2163654766, 4356757738
(列表;图表;参考;听;历史;文本;内部格式)
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