I see there is now that long line example on the man page. However it needs to be wrapped else it overflows the man page.
Anyway how about instead 0 4 * * Sat test `date +\%m` -ne `date +\%m -d next\ week` && program_to_run -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org