Please see "Search this thread" along the blue bar at the top. Makes it really easy to enter your number and see if it appears in any of the posts. FYI - It was not taken.
I believe that Spyridon is the winner with his guess of 3144 which is very close to 3137.
I'd like to make an honorable mention of RetroFuture's guess of 317. While way off from the actual number, the sequence is close - just missing a "3" in there.
OK, I think that concludes this round. I'll see if I can come up with something interesting for tomorrow.