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3, 9, 24, 64, 164, 418, 1048, 2614, 6468, 15942, 39120, 95734, 233660, 569230, 1384408, 3362686, 8158932, 19778982, 47913504, 115999462, 280698860, 678970558, 1641785704, 3968834446, 9592037508, 23178077334, 55998523824, 135275792374
(列表;图表;参考;听;历史;文本;内部格式)
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