What is C3C_3C3 in the Catalan number sequence where Cn=∑i=0n−1CiCn−1−iC_n = \sum_{i=0}^{n-1} C_i C_{n-1-i}Cn=∑i=0n−1CiCn−1−i and C0=1C_0=1C0=1?
222
555
141414
333