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1, 1, 1, 3, 6, 14, 34, 81, 193, 461, 1101, 2631, 6288, 15029, 35921, 85856, 205208, 490477, 1172311, 2801993, 6697170, 16007210, 38259559, 91445908, 218569015, 522411722, 1248639967, 2984431055, 7133224115, 17049442704, 40750646810, 97399970443, 232800089935
(列表;图表;参考;听;历史;文本;内部格式)
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