\begin{center}
\footnotesize
\setlength{\mylength}{\baselineskip}
\begin{longtable}{rp{0ex}p{9cm}p{0ex}RL}
\caption{Laurent polynomials and selected mutations for bucket 28.}\\

\toprule \multicolumn{1}{c}{{Node}}&& \multicolumn{1}{c}{{Laurent polynomial}} && \multicolumn{2}{c}{{Mutations from Figure~\ref{fig:28a}}} \\ \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:28a}}} \\ \midrule \endhead

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

\bottomrule \endlastfoot

30 && $x+\frac{x}{z}+y+z+\frac{1}{y}+\frac{1}{x}$ && $52 \colon {}$ & $\left(\frac{x^2yz}{xyz+xz+y},\frac{xyz+xz+y}{xy},\frac{x^2z}{xyz+xz+y}\right)$ \spacer \\* 
 &&  && $81 \colon {}$ & $\left(y,\frac{x^2z}{xz+y},\frac{xy}{xz+y}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
52 && $x+y+z+\frac{z}{y}+\frac{2}{x}+\frac{1}{xy}+\frac{1}{x^2z}$ && $30 \colon {}$ & $\left(\frac{xy+yz+1}{y},\frac{x}{z},\frac{xy^2}{xy+yz+1}\right)$ \spacer \\* \rowcolor[gray]{0.95}
 &&  && $166 \colon {}$ & $\left(x,y+z,\frac{y(y+z)}{xz}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 81 && $x+y+z+\frac{1}{y}+\frac{y}{x}+\frac{1}{x}+\frac{y}{x^2z}$ && $30 \colon {}$ & $\left(y+z,x,\frac{xy}{z(y+z)}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
166 && $x+y+z+\frac{y^2}{xz}+\frac{y}{x}+\frac{y}{xz}+\frac{2}{x}+\frac{1}{xy}$ && $52 \colon {}$ & $\left(x,\frac{xyz}{xz+y},\frac{y^2}{xz+y}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \end{longtable}
\end{center}
