摘要：
Description 1942Transmitting and memorizing information is a task that requires different coding systems for the best use of the available space. A w... 阅读全文
摘要：
令,h(0)=1,h(1)＝1，catalan数满足递归式：h(n)=h(0)*h(n-1)+ h(1)*h(n-2) + h(2)*h(n-3) + ... + h(n-1)h(0) (其中n>=2)该递推关系的解为：h(n)=c(2n,n)/(n+1) (n=1,2,3,...)h(n)=h(n... 阅读全文