C++博客-昨夜西风凋碧树，独上高楼，望尽天涯路！-随笔分类-组合数学http://www.cppblog.com/guojingjia2006/category/7788.html小果子zh-cnThu, 07 Aug 2008 05:16:58 GMTThu, 07 Aug 2008 05:16:58 GMT60Catalan数http://www.cppblog.com/guojingjia2006/archive/2008/08/07/58235.html小果子小果子Thu, 07 Aug 2008 04:23:00 GMThttp://www.cppblog.com/guojingjia2006/archive/2008/08/07/58235.htmlhttp://www.cppblog.com/guojingjia2006/comments/58235.htmlhttp://www.cppblog.com/guojingjia2006/archive/2008/08/07/58235.html#Feedback0http://www.cppblog.com/guojingjia2006/comments/commentRss/58235.htmlhttp://www.cppblog.com/guojingjia2006/services/trackbacks/58235.html2.不完全加括号:s1=1,s2=1,Sn=(3*(2*n-3)Sn-1-(n-3)Sn-2)/n;


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