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1, 7, 14, 22, 68, 163, 320, 782, 1889, 4109, 9474, 22365, 50630, 115709, 268817, 616265, 1410697, 3253586, 7480630, 17161490, 39477589, 90787636, 208528864, 479338273, 1102090695, 2532624372, 5820869563, 13380882748, 30754476169
(列表;图表;参考;听;历史;文本;内部格式)
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