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-1, 2, 9, 27, 74, 197, 519, 1362, 3569, 9347, 24474, 64077, 167759, 439202, 1149849, 3010347, 7881194, 20633237, 54018519, 141422322, 370248449, 969323027, 2537720634, 6643838877, 17393795999, 45537549122, 119218851369, 312119004987, 817138163594
(列表;图表;参考;听;历史;文本;内部格式)
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