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1, 2, 4, 10, 30, 102, 374, 1430, 5590, 22102, 87894, 350550, 1400150, 5596502, 22377814, 89494870, 357946710, 1431721302, 5726754134, 22906754390, 91626493270, 366504924502, 1466017600854, 5864066209110, 23456256447830, 93825009014102, 375300002501974
(列表;图表;参考文献;听;历史;文本;内部格式)
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