设实数列 \(\{x_n\}\) 满足:\(x_0 = 0\),\(x_2 = \sqrt[3]{2}x_1\),\(x_3\) 是正整数,且 \[x_{n+1} = \frac{1}{\sqrt[3]{4}} x_n + \sqrt[3]{4} x_{n-1} + \frac{1}{2} x_{n-2} (n \geq 2).\] 问:这类数列中最少有多少个整数项?

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