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0, 0, 1, 2, 6, 14, 38, 88, 217, 506, 1209, 2810, 6600, 15308, 35653, 82532, 191371, 442428, 1023499, 2364324, 5463084, 12614628, 29131729, 67256334, 155289747, 358522126, 827816037, 1911447100, 4414086763, 10194246046, 23546391253
(列表;图表;参考;听;历史;文本;内部格式)
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