\BOOKMARK [1][-]{section.1}{Introduction}{}% 1
\BOOKMARK [1][-]{section.2}{The ECO method}{}% 2
\BOOKMARK [2][-]{subsection.2.1}{Parametric production matrices and weighted succession rules}{section.2}% 3
\BOOKMARK [1][-]{section.3}{The Main Example}{}% 4
\BOOKMARK [2][-]{subsection.3.1}{Dyck paths}{section.3}% 5
\BOOKMARK [2][-]{subsection.3.2}{The matrix}{section.3}% 6
\BOOKMARK [2][-]{subsection.3.3}{Examples}{section.3}% 7