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1, 3, 12, 44, 166, 626, 2377, 9063, 34695, 133265, 513381, 1982763, 7674937, 29767223, 115655452, 450067268, 1753894162, 6843602438, 26734398172, 104548010228, 409243597192, 1603372802888, 6286998311062, 24670701224714, 96877958811586, 380673221064366
(列表;图表;参考文献;听;历史;文本;内部格式)
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