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0, 1, 8, 58, 416, 2980, 21344, 152872, 1094912, 7842064, 56167040, 402283936, 2881269248, 20636450368, 147803987456, 1058613197440, 7582081654784, 54304974053632, 388947302500352, 2785748575681024, 19952304790446080, 142903946869482496, 1023517746213183488
(列表;图表;参考;听;历史;文本;内部格式)
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