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Re:谁能说一下为什么是catalan 数?

Posted by 13408100238 at 2014-07-04 09:06:44 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
> 谁能说一下为什么是catalan 数?
> 而且得输出 catalan(n+2)?
算出前几项,发现前几项是1,1,2,5,14,42,可以推测是catalan数

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