curl 'http://rosettacode.org/mw/index.php?title=Special:Categories&limit=5000' |
sed -nre 's/^<li.*title="Category:([^"(]+)".*\(([0-9]+) members\).*/\2 - \1/p' |
sort -nr | awk '{printf "%2d. %s\n",NR,$0}'