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1, 2, 8, 20, 58, 136, 348, 788, 1856, 4094, 9160, 19716, 42692, 90152, 190628, 396800, 825170, 1698432, 3490484, 7124396, 14517896, 29450384, 59654636, 120472948, 243010964, 489208250, 983952448, 1976442696, 3967448276, 7957317632
(列表;图表;参考;听;历史;文本;内部格式)
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