\begin{center}
\footnotesize
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\begin{longtable}{rp{0ex}p{9cm}p{0ex}RL}
\caption{Laurent polynomials and selected mutations for bucket 55.}\\

\toprule \multicolumn{1}{c}{{Node}}&& \multicolumn{1}{c}{{Laurent polynomial}} && \multicolumn{2}{c}{{Mutations from Figure~\ref{fig:55a}}} \\ \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:55a}}} \\ \midrule \endhead

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

\bottomrule \endlastfoot

112 && $x+y+z+\frac{3}{x}+\frac{2}{xy}+\frac{1}{xyz}+\frac{3}{x^2y}+\frac{1}{x^3y^2}$ && $147 \colon {}$ & $\left(\frac{(x+y)^2}{x^2y},\frac{x^3}{(x+y)^2},z\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
147 && $x+y+z+\frac{1}{y}+\frac{2y}{x}+\frac{y}{xz}+\frac{2}{x}+\frac{y}{x^2}$ && $112 \colon {}$ & $\left(\frac{(xy+1)^2}{x^2y},\frac{(xy+1)^2}{x^3y^2},z\right)$ \spacer \\* \rowcolor[gray]{0.95}
 &&  && $868 \colon {}$ & $\left(\frac{x^3yz}{x^2yz+xz+1},\frac{x^2z}{x^2yz+xz+1},\frac{x^2yz+xz+1}{x^2y}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 799 && $x+y+z+\frac{3}{x}+\frac{2}{xy}+\frac{1}{x^2z}+\frac{4}{x^2y}+\frac{3}{x^3yz}+\frac{1}{x^3y^2}+\frac{3}{x^4y^2z}+\frac{1}{x^5y^3z}$ && $868 \colon {}$ & $\left(x,y,\frac{(xy+1)^2}{x^4y^2z}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
868 && $x+y+z+\frac{3}{x}+\frac{z}{xy}+\frac{2}{xy}+\frac{1}{x^2z}+\frac{4}{x^2y}+\frac{2}{x^3yz}+\frac{1}{x^3y^2}+\frac{1}{x^4y^2z}$ && $147 \colon {}$ & $\left(\frac{x^2z+xyz+y}{xz},\frac{x^2z}{y(x^2z+xyz+y)},\frac{x^2z^2}{x^2z+xyz+y}\right)$ \spacer \\* \rowcolor[gray]{0.95}
 &&  && $799 \colon {}$ & $\left(x,y,\frac{(xy+1)^2}{x^4y^2z}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \end{longtable}
\end{center}
