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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 7, 22, 57, 127, 253, 463, 793, 1288, 2003, 3005, 4380, 6255, 8855, 12630, 18508, 28358, 45783, 77408, 134883, 237888, 418513, 727513, 1243163, 2083888, 3426771, 5535911, 8808206, 13850761, 21615771, 33638409, 52455339, 82332229, 130506914, 209273284
(列表;图表;参考;听;历史;文本;内部格式)
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