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1, 1, 2, 5, 13, 33, 101, 302, 874, 2830, 9106, 28087, 93942, 313951, 1009303, 3444843, 11779708, 38944643, 134917573, 468365563, 1579283326, 5534789319, 19424123847, 66442780503, 234990336296, 831643128190, 2875768468601, 10244706374441, 36502210862689, 127302299040154, 456142329007652, 1634285147135400
(列表;图表;参考;听;历史;文本;内部格式)
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