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Re:谁能说一下为什么是catalan 数?

Posted by liujq at 2009-10-18 09:53:48 on Problem 2084
In Reply To:谁能说一下为什么是catalan 数? Posted by:WAkeeper7 at 2009-09-15 08:42:25
就是加括号的原理,离散数学与组合数学那本书上有

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