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3, 7, 15, 31, 68, 151, 339, 767, 1743, 3972, 9067, 20719, 47375, 108367, 247940, 567359, 1298395, 2971519, 6800863, 15565316, 35625171, 81537815, 186622095, 427137983, 977628868, 2237588711, 5121377187, 11721775999, 26828733231
(列表;图表;参考;听;历史;文本;内部格式)
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