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0, 1, 4, 18, 48, 125, 288, 637, 1344, 2754, 5500, 10769, 20736, 39377, 73892, 137250, 252672, 461533, 837216, 1509341, 2706000, 4827186, 8572124, 15159553, 26707968, 46890625, 82061668, 143188722, 249163824, 432466589, 748836000, 1293764509, 2230588416, 3838265442, 6592537372, 11303644625, 19349736192
(列表;图表;参考;听;历史;文本;内部格式)
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