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0, 0, 0, 1, 5, 21, 81, 302, 1107, 4027, 14608, 52988, 192501, 701065, 2560806, 9384273, 34504203, 127288011, 471102318, 1749063906, 6513268401, 24323719461, 91081800417, 341929853235, 1286711419527, 4852902998951, 18341683253676
(列表;图表;参考;听;历史;文本;内部格式)
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