#Bash+coreutils+[BSDGames][1] package, 44 bytes

    seq $[10**15]|number -l|grep -v [e.]|sed $1q

This outputs each term written in words - not sure if that's acceptable or not:

    $ ./eban.sh 5
    two
    four
    six
    thirty
    thirty-two
    $ 

  [1]: http://wiki.linuxquestions.org/wiki/BSD_games