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1, 4, 14, 48, 137, 380, 998, 2488, 5996, 14020, 31868, 70616, 153389, 326248, 681914, 1402880, 2841769, 5678316, 11201956, 21833480, 42081245, 80264752, 151572328, 283577152, 525894397, 967100700, 1764378830, 3194682272, 5742739237, 10252117308, 18182247316
(列表;图表;参考;听;历史;文本;内部格式)
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