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1, 3, 7, 18, 42, 97, 207, 431, 861, 1685, 3216, 6042, 11139, 20248, 36245, 64041, 111663, 192432, 327803, 552593, 922129, 1524496, 2497868, 4058745, 6542497, 10467325, 16626651, 26231148, 41114412, 64042922, 99164091, 152671363, 233762167
(列表;图表;参考;听;历史;文本;内部格式)
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