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1, 2, 6, 24, 120, 288, 276, 374, 732, 1673, 3692, 7784, 15360, 29532, 58532, 118037, 240313, 487649, 980297, 1966710, 3945522, 7932930, 15978403, 32172852, 64755796, 130259920, 261986262, 527049589, 1060407528, 2133708989, 4293197371
(列表;图表;参考;听;历史;文本;内部格式)
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