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1, 1, 1, 3, 4, 14, 46, 111, 330, 1614, 7348, 21340, 98145, 379405, 2633085, 14871033, 57284558, 278927415, 1609313975, 8289565670, 74945364815, 522977754235, 2403799401259, 14180489136597, 83964652635668, 623008803758260, 3918144764978718, 46950727351392315
(列表;图表;参考;听;历史;文本;内部格式)
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