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1, 1, 3, 8, 28, 90, 346, 1268, 5042, 19996, 81938, 339484, 1430989, 6091398, 26262618, 114062647, 500199764, 2207452156, 9810250085, 43847809271, 197025418977, 889648032464, 4034769757042, 18372808349124, 83978227766573, 385153726452491, 1772156467187142, 8178011190408715, 37843702730012539
(列表;图表;参考;听;历史;文本;内部格式)
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