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2, 2, 2, 2, 2, 8, 14, 26, 42, 84, 154, 314, 610, 1220, 2400, 4836, 9590, 19220, 38326, 76684, 153110, 306294, 612082, 1224304, 2447620, 4895468, 9789002, 19578586, 39153160, 78307450, 156607388, 313216848, 659125988, 1491573926, 2990216920, 5536326412
(列表;图表;参考;听;历史;文本;内部格式)
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