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1, 0, 2, 2, 2, 4, 6, 6, 14, 34, 79, 159, 227, 429, 727, 1146, 1999, 3238, 5018, 8976, 14977, 24768, 38400, 70678, 152535, 295493, 617675, 1404099, 3023086, 6685876, 14230031, 30218806, 62175519, 127820798, 257285277, 516574751, 1021334631, 2009999405, 3917878730
(列表;图表;参考;听;历史;文本;内部格式)
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