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1, 1, 5, 17, 61, 249, 1025, 4225, 17981, 77171, 335767, 1469473, 6471443, 28806857, 128553425, 576195527, 2599242627, 11749626791, 53318577813, 242787006803, 1107703952241, 5070195032741, 23253679041761, 106848286792301, 492148821690257, 2270023507427725, 10488653029284599, 48545749505758301
(列表;图表;参考;听;历史;文本;内部格式)
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