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1, 5, 11, 21, 55, 125, 271, 645, 1479, 3325, 7695, 17653, 40183, 92269, 211487, 483365, 1107591, 2537245, 5806511, 13298005, 30454935, 69724365, 159661375, 365617029, 837155239, 1916943229, 4389542863, 10051119797, 23015247287, 52701125421
(列表;图表;参考;听;历史;文本;内部格式)
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