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1, 0, 1, 1, 1, 5, 2, 14, 13, 31, 66, 77, 240, 286, 722, 1226, 2141, 4760, 7268, 16473, 27716, 54615, 106217, 187818, 388084, 685830, 1370162, 2569351, 4849538, 9526355, 17598392, 34694301, 65152925, 125679731, 242019753, 459049449, 893614680, 1695840536
(列表;图表;参考;听;历史;文本;内部格式)
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