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1, 10, 69, 398, 2057, 9858, 44685, 194022, 813969, 3319866, 13224789, 51635070, 198148761, 749016882, 2794021533, 10300389462, 37575535905, 135782112618, 486470994021, 1729358969454, 6104068084521, 21404982017250, 74609825192109
(列表;图表;参考;听;历史;文本;内部格式)
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