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1, 2, 6, 14, 34, 68, 144, 276, 534, 974, 1774, 3106, 5410, 9146, 15334, 25158, 40884, 65264, 103204, 160808, 248222, 378350, 571534, 853890, 1264962, 1855638, 2700490, 3895626, 5577846, 7923072, 11176164, 15650712, 21774473, 30092868, 41337096, 56434524
(列表;图表;参考;听;历史;文本;内部格式)
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