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1, 1, 1, 1, 1, 2, 4, 7, 12, 21, 38, 70, 129, 238, 442, 827, 1556, 2939, 5570, 10593, 20214, 38690, 74251, 142844, 275430, 532215, 1030440, 1998733, 3883552, 7557865, 14730670, 28751455, 56192036, 109959882, 215431019, 422541192, 829642870, 1630613418
(列表;图表;参考;听;历史;文本;内部格式)
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