WordPress.com and WordPress.org are separate and run on different software. Themes are coded to run on one software or the other. If there is a WordPress.ORG version of this theme you will find it here > http://wordpress.org/extend/themes/
FWIW when I do not provide a full answer in a single comment box that’s because I am multitasking and have to answer a phone, etc. I always post again usually within a couple of minutes to complete the answers I provide.
I’m not referring to a free hosted blog by wordpress, but am trying to find this particular theme to use on a test site for a client. I can see many other themes (210) but not that one.I will look in org.