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0, 1, 3, 13, 51, 208, 842, 3419, 13873, 56303, 228487, 927252, 3762976, 15270937, 61972603, 251497601, 1020629091, 4141923220, 16808778106, 68213486019, 276824385713, 1123410413427, 4559031003423, 18501487472296, 75082849498048, 304701678564513, 1236542213577475, 5018143166006245
(列表;图表;参考;听;历史;文本;内部格式)
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