\begin{center}
\footnotesize
\setlength{\mylength}{\baselineskip}
\begin{longtable}{rp{0ex}p{9cm}p{0ex}RL}
\caption{Laurent polynomials and selected mutations for bucket 17.}\\

\toprule \multicolumn{1}{c}{{Node}}&& \multicolumn{1}{c}{{Laurent polynomial}} && \multicolumn{2}{c}{{Mutations from Figure~\ref{fig:17a}}} \\ \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:17a}}} \\ \midrule \endhead

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

\bottomrule \endlastfoot

77 && $xz+x+\frac{x}{y}+y+z+\frac{1}{yz}+\frac{1}{x}$ && $178 \colon {}$ & $\left(\frac{xyz}{yz+z+1},y,\frac{yz+z+1}{xy}\right)$ \spacer \\* 
 &&  && $365 \colon {}$ & $\left(\frac{xy}{yz+y+1},\frac{x}{yz+y+1},z\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
178 && $x+y+z+\frac{z}{x}+\frac{1}{x}+\frac{z}{xy}+\frac{2}{xy}+\frac{1}{xyz}$ && $77 \colon {}$ & $\left(\frac{xyz+xz+1}{yz},y,xz\right)$ \spacer \\* \rowcolor[gray]{0.95}
 &&  && $205 \colon {}$ & $\left(x,\frac{xyz+1}{xy},xyz\right)$ \spacer \\* \rowcolor[gray]{0.95}
 &&  && $850 \colon {}$ & $\left(\frac{x^2y^2}{xy^2+xyz+z},\frac{xy^2+xyz+z}{xy},\frac{x^2yz}{xy^2+xyz+z}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 205 && $xyz+x+yz+y+z+\frac{1}{x}+\frac{1}{xz}+\frac{1}{xy}$ && $178 \colon {}$ & $\left(x,\frac{z+1}{xy},\frac{yz}{z+1}\right)$ \spacer \\* 
 &&  && $694 \colon {}$ & $\left(\frac{yz+y+z}{xyz},y,z\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
365 && $x+y+z+\frac{y}{x}+\frac{y}{xz}+\frac{z}{x}+\frac{1}{x}+\frac{1}{xz}+\frac{1}{xy}$ && $77 \colon {}$ & $\left(xz+x+y,\frac{x}{y},z\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 694 && $x+yz+y+z+\frac{yz}{x}+\frac{y}{x}+\frac{z}{x}+\frac{1}{x}+\frac{1}{xz}+\frac{1}{xy}$ && $205 \colon {}$ & $\left(\frac{yz+y+z}{xyz},y,z\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
850 && $x+y+z+\frac{z}{y}+\frac{1}{x}+\frac{2z}{xy}+\frac{2}{xy}+\frac{1}{x^2z}+\frac{1}{x^2y}+\frac{z}{x^2y^2}+\frac{1}{x^3y^2}$ && $178 \colon {}$ & $\left(\frac{x^2y+xyz+z}{xy},\frac{x^2y^2}{x^2y+xyz+z},\frac{xy^2z}{x^2y+xyz+z}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \end{longtable}
\end{center}
