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2, 6, 12, 28, 68, 156, 368, 872, 2048, 4832, 11408, 26896, 63456, 149728, 353216, 833344, 1966144, 4638656, 10944000, 25820288, 60917760, 143723520, 339087616, 800010496, 1887468032, 4453111296, 10506243072, 24787422208, 58481067008
(列表;图表;参考;听;历史;文本;内部格式)
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