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1, 6, 35, 207, 1251, 7678, 47658, 298371, 1880659, 11918586, 75871710, 484793950, 3107494430, 19973075580, 128678167220, 830735862179, 5372968238979, 34807369089378, 225818672567382, 1466956891774602, 9540909022501226, 62119854068610436, 404854330511525580
(列表;图表;参考;听;历史;文本;内部格式)
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