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1, 1, 2, 4, 10, 24, 64, 164, 440, 1164, 3128, 8368, 22552, 60624, 163528, 440768, 1189616, 3210000, 8667296, 23400304, 63196192, 170668608, 460972768, 1245085184, 3363190688, 9084616128, 24540062528, 66289885504, 179071151872, 483733046208, 1306740302848, 3529993576448, 9535868752256
(列表;图表;参考;听;历史;文本;内部格式)
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