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1, 2, 8, 28, 105, 384, 1442, 5388, 20317, 76712, 290790, 1104538, 4205909, 16044994, 61322356, 234739140, 899911685, 3454630372, 13278582906, 51098682962, 196853475135, 759139115962, 2930340545406, 11321631496180, 43779660235746, 169429224658130
(列表;图表;参考;听;历史;文本;内部格式)
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