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1, 1, 2, 8, 23, 64, 160, 397, 968, 2372, 5714, 13617, 32007, 74396, 171222, 390629, 883922, 1984631, 4423528, 9790146, 21524829, 47027558, 102135967, 220565018, 473743833, 1012274948, 2152271718, 4554344649, 9593260912, 20118418061, 42012556671, 87375161720, 181001416773
(列表;图表;参考;听;历史;文本;内部格式)
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