What are the first 3 overtones for a pipe open at both ends?

[Pearce_09]

Im trying to find the frequency of the first 3 overtones for a pipe that is open at both ends...
is the first 3 overtones the first three anti nodes??.. I am not sure.

 

[Astronuc]

Try this reference - http://en.wikipedia.org/wiki/Overtones

For a standing wave, the antinode is the location of maximum amplitude.
http://www.antonine-education.co.uk/Physics_A2/Module_4/Topic_5/TOPIC_5.HTM

http://www.glenbrook.k12.il.us/gbssci/phys/Class/sound/u11l4d.html