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0, 0, 1, 4, 13, 38, 105, 280, 737, 1942, 5183, 14100, 39151, 110642, 316751, 914248, 2650655, 7701562, 22400559, 65203428, 189970159, 554165922, 1619018259, 4737859512, 13887657307, 40769959314, 119849273449, 352716050428, 1039027117929
(列表;图表;参考;听;历史;文本;内部格式)
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