\BOOKMARK [1][-]{section.1}{Introduction}{}% 1
\BOOKMARK [1][-]{section.2}{First approach: rook numbers}{}% 2
\BOOKMARK [1][-]{section.3}{Second approach: generalized symmetric functions}{}% 3
\BOOKMARK [1][-]{section.4}{Some Special Cases}{}% 4
\BOOKMARK [1][-]{section.5}{Acknowledgment}{}% 5