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2, 3, 8, 17, 34, 68, 164, 385, 826, 1848, 4450, 10544, 24056, 56108, 135672, 324720, 762864, 1818110, 4413518, 10641004, 25427616, 61338160, 149415144, 362365684, 875207554, 2127235158, 5197934580, 12666448776, 30813494386, 75278796468
(列表;图表;参考;听;历史;文本;内部格式)
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