\begin{center}
\footnotesize
\setlength{\mylength}{\baselineskip}
\begin{longtable}{rp{0ex}p{9cm}p{0ex}RL}
\caption{Laurent polynomials and selected mutations for bucket 22.}\\

\toprule \multicolumn{1}{c}{{Node}}&& \multicolumn{1}{c}{{Laurent polynomial}} && \multicolumn{2}{c}{{Mutations from Figure~\ref{fig:22a}}} \\ \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:22a}}} \\ \midrule \endhead

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

\bottomrule \endlastfoot

289 && $\frac{x^2}{yz}+x+\frac{4x}{yz}+y+z+\frac{6}{yz}+\frac{1}{x}+\frac{4}{xyz}+\frac{1}{x^2yz}$ && $354 \colon {}$ & $\left(x,y,z(x+1)^2\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
344 && $xz+x+\frac{x}{yz}+y+z+\frac{3}{yz}+\frac{1}{x}+\frac{3}{xyz}+\frac{1}{x^2yz}$ && $354 \colon {}$ & $\left(\frac{1}{x},y,xz(x+1)\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 354 && $x^2z+2xz+x+y+z+\frac{1}{yz}+\frac{1}{x}+\frac{2}{xyz}+\frac{1}{x^2yz}$ && $289 \colon {}$ & $\left(x,y,\frac{z}{(x+1)^2}\right)$ \spacer \\* 
 &&  && $344 \colon {}$ & $\left(\frac{1}{x},y,\frac{x^2z}{x+1}\right)$ \spacer \\* 
 &&  && $374 \colon {}$ & $\left(x,\frac{y(x+1)}{x},\frac{1}{yz}\right)$ \spacer \\* 
 &&  && $447 \colon {}$ & $\left(\frac{x(yz^2+yz+1)}{yz},y,\frac{yz^2}{x(yz^2+yz+1)}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
374 && $\frac{x^2}{yz}+x+\frac{2x}{yz}+y+z+\frac{1}{yz}+\frac{y}{x}+\frac{z}{x}+\frac{1}{x}$ && $354 \colon {}$ & $\left(\frac{1}{x},z(x+1),\frac{y}{x+1}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 447 && $xz^2+2xz+x+\frac{2x}{y}+\frac{2x}{yz}+\frac{x}{y^2z^2}+y+2z+\frac{2}{yz}+\frac{1}{x}$ && $354 \colon {}$ & $\left(\frac{x^2yz}{x^2yz^2+xyz+1},y,xz\right)$ \spacer \\* 
 &&  && $1582 \colon {}$ & $\left(\frac{x+y}{x^2},\frac{z(x+y)}{x},\frac{1}{yz}\right)$ \spacer \\* 
 &&  && $2720 \colon {}$ & $\left(\frac{(z+1)^2}{x},y(z+1)^2,\frac{1}{xyz}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
1385 && $x+y+z+\frac{2}{yz}+\frac{yz}{x}+\frac{y}{x}+\frac{z}{x}+\frac{1}{x}+\frac{1}{xz}+\frac{1}{xy}+\frac{2}{xyz}+\frac{1}{xy^2z^2}$ && $1582 \colon {}$ & $\left(x,\frac{xyz^2}{xyz+yz+1},\frac{xyz+yz+1}{xz}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 1582 && $x+y+z+\frac{2}{yz}+\frac{yz}{x}+\frac{2y}{x}+\frac{1}{x}+\frac{2}{xz}+\frac{2}{xyz}+\frac{1}{xy^2z^2}+\frac{y}{x^2}+\frac{2}{x^2z}+\frac{1}{x^2yz^2}$ && $447 \colon {}$ & $\left(\frac{x+yz}{xyz},\frac{x+yz}{y^2z^2},\frac{y^2z}{x+yz}\right)$ \spacer \\* 
 &&  && $1385 \colon {}$ & $\left(x,\frac{xyz^2}{xyz+yz+1},\frac{xyz+yz+1}{xz}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \rowcolor[gray]{0.95}
2720 && $x+yz^2+2yz+y+2z+\frac{z^2}{x}+\frac{2z}{x}+\frac{1}{x}+\frac{2}{xy}+\frac{2}{xyz}+\frac{2z}{x^2y}+\frac{4}{x^2y}+\frac{2}{x^2yz}+\frac{1}{x^3y^2}+\frac{2}{x^3y^2z}+\frac{1}{x^3y^2z^2}$ && $447 \colon {}$ & $\left(\frac{(x+yz)^2}{xy^2z^2},\frac{y^3z^2}{(x+yz)^2},\frac{x}{yz}\right)$ \bottomspacer \\ \addlinespace[1.1ex]
 \end{longtable}
\end{center}
