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1, 4, 22, 152, 1262, 12232, 135544, 1690080, 23417928, 356958816, 5936071344, 106944112320, 2074955738160, 43135041684288, 956498746867584, 22535656688150016, 562187777547687552, 14803856501210021376, 410341578632728752384, 11942796083017877185536, 364141566064571517418752, 11607532093950790287928320
(列表;图表;参考文献;听;历史;文本;内部格式)
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