The Catalan numbers also count the number of ways in which ann-gon can be dissected into triangles by nonintersecting diagonals.
加泰隆数又是用不相交的对角线划分几边形成三角形的方式数。
The Catalan numbers also count the number of ways in which ann-gon can be dissected into triangles by nonintersecting diagonals.
加泰隆数又是用不相交的对角线划分几边形成三角形的方式数。
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