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1, 2, 6, 1, 16, 47, 112, 15, 464, 239, 1120, 2591, 7424, 1791, 25344, 4351, 75008, 151295, 296448, 598527, 1200128, 2420735, 4730880, 9637887, 19156992, 38465535, 77488128, 153100287, 307560448, 620691455, 1229127680, 2477850623, 4861526016, 9842917375
(列表;图表;参考;听;历史;文本;内部格式)
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