\begin{center}
\footnotesize
\setlength{\mylength}{\baselineskip}
\begin{longtable}{rp{0ex}p{9cm}p{0ex}RL}
\caption{Laurent polynomials and selected mutations for bucket 13.}\\

\toprule \multicolumn{1}{c}{{Node}}&& \multicolumn{1}{c}{{Laurent polynomial}} && \multicolumn{2}{c}{{Mutations from Figure~\ref{fig:13a}}} \\ \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:13a}}} \\ \midrule \endhead

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

\bottomrule \endlastfoot

64 && $\frac{x^2}{yz}+x+\frac{2x}{yz}+y+z+\frac{1}{yz}+\frac{1}{x}$ && $76 \colon {}$ & $\left(x,y,z(x+1)\right)$ \spacer \\* 
 &&  && $139 \colon {}$ & $\left(\frac{xyz+1}{x^2yz},\frac{xyz+1}{xy},y\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
76 && $xz+x+\frac{x}{yz}+y+z+\frac{1}{yz}+\frac{1}{x}$ && $64 \colon {}$ & $\left(x,y,\frac{z}{x+1}\right)$ \spacer \\* \rowcolor[gray]{0.95}
 &&  && $363 \colon {}$ & $\left(\frac{xyz}{y^2z+yz+1},\frac{x}{y^2z+yz+1},\frac{y^2z+yz+1}{xy}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 139 && $x+y+z+\frac{1}{x}+\frac{1}{xy}+\frac{2}{xyz}+\frac{2}{x^2yz}+\frac{1}{x^3y^2z^2}$ && $64 \colon {}$ & $\left(\frac{x+yz}{xyz},z,\frac{y^2z}{x+yz}\right)$ \spacer \\* 
 &&  && $1210 \colon {}$ & $\left(\frac{x^3z^2}{(xz+y)^2},\frac{(xz+y)^2}{x^3yz^2},\frac{(xz+y)^2}{x^2z}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
363 && $x+y+z+\frac{yz}{x}+\frac{y}{x}+\frac{z}{x}+\frac{1}{x}+\frac{1}{xy}+\frac{1}{xyz}$ && $76 \colon {}$ & $\left(\frac{xyz+x+y^2z}{yz},\frac{1}{yz},xz\right)$ \spacer \\* \rowcolor[gray]{0.95}
 &&  && $611 \colon {}$ & $\left(x,\frac{xy+xz+z}{x},\frac{z}{y(xy+xz+z)}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 611 && $x+y+\frac{y}{z}+z+\frac{y}{x}+\frac{2z}{x}+\frac{1}{x}+\frac{1}{xy}+\frac{z}{x^2}+\frac{z}{x^2y}$ && $363 \colon {}$ & $\left(x,\frac{y}{xyz+yz+1},\frac{xy^2z}{xyz+yz+1}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
1210 && $x+y+z+\frac{2y}{x}+\frac{2y}{xz}+\frac{1}{x}+\frac{1}{xy}+\frac{y^2}{x^2z}+\frac{2y}{x^2z}+\frac{2}{x^2z}+\frac{y^2}{x^3z^2}+\frac{y}{x^3z^2}$ && $139 \colon {}$ & $\left(\frac{(x^2yz+1)^2}{x^3y^2z^2},\frac{1}{xy},\frac{x^4y^2z^3}{(x^2yz+1)^2}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \end{longtable}
\end{center}
