\begin{center}
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\begin{longtable}{rp{0ex}p{9cm}p{0ex}RL}
\caption{Laurent polynomials and selected mutations for bucket 52.}\\

\toprule \multicolumn{1}{c}{{Node}}&& \multicolumn{1}{c}{{Laurent polynomial}} && \multicolumn{2}{c}{{Mutations from Figure~\ref{fig:52a}}} \\ \midrule \endfirsthead

\multicolumn{6}{c}{{\tablename\ \thetable{} -- continued from previous page}} \\ \addlinespace[1.7ex] \midrule \multicolumn{1}{c}{{Node}}&& \multicolumn{1}{c}{{Laurent polynomial}} && \multicolumn{2}{c}{{Mutations from Figure~\ref{fig:52a}}} \\ \midrule \endhead

\midrule \multicolumn{6}{c}{{Continued on next page}} \endfoot

\bottomrule \endlastfoot

144 && $x+y+z+\frac{1}{y}+\frac{2y}{x}+\frac{2}{x}+\frac{y}{x^2}+\frac{y}{x^2z}$ && $272 \colon {}$ & $\left(\frac{x^2yz+(xy+1)^2}{x^2y},\frac{x^2yz+(xy+1)^2}{x^3y^2},\frac{1}{x^2yz}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
272 && $x+y+z+\frac{3}{x}+\frac{z}{xy}+\frac{2}{xy}+\frac{3}{x^2y}+\frac{1}{x^2yz}+\frac{1}{x^3y^2}$ && $144 \colon {}$ & $\left(\frac{y^2+z(x+y)^2}{x^2yz},\frac{x^3z}{y^2+z(x+y)^2},\frac{xy^2}{y^2+z(x+y)^2}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \end{longtable}
\end{center}
