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1, 1, 2, 6, 24, 114, 648, 4284, 32256, 273616, 2578352, 26725776, 302273664, 3703441104, 48865510848, 690823736064, 10417318281216, 166907223390976, 2831507368842752, 50703852290781696, 955742450175919104, 18916030525704006144, 392213482250102734848
(列表;图表;参考;听;历史;文本;内部格式)
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