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2, 5, 13, 28, 64, 142, 318, 726, 1634, 3695, 8363, 18904, 42787, 96771, 218940, 495514, 1121224, 2537388, 5742666, 12996786, 29415660, 66576728, 150686121, 341060866, 771951453, 1747237409, 3954724092, 8951198975, 20260385570, 45857968649
(列表;图表;参考;听;历史;文本;内部格式)
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