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1, 2, 2, 8, 16, 48, 136, 384, 1184, 3520, 10944, 34048, 107008, 340480, 1087104, 3502080, 11333120, 36867072, 120491008, 395276288, 1301700608, 4300414976, 14250496000, 47353233408, 157747462144, 526740717568, 1762653863936, 5910312910848
(列表;图表;参考文献;听;历史;文本;内部格式)
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