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1, 5, 19, 75, 295, 1161, 4569, 17981, 70763, 278483, 1095951, 4313041, 16973681, 66798773, 262882051, 1034554523, 4071419319, 16022795225, 63056626377, 248155086189, 976597549531, 3843333571747, 15125179200799, 59524119253665
(列表;图表;参考文献;听;历史;文本;内部格式)
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