Yep - that's what they look like for sure. Nice looking 3 leafers.
Every once in a while you will find one with 4 or even 5 leaves the first year. Last year I had two that came up with 5 leaves the first year. Most of the time they only have 3 - just like your photo's.
Now if you can just get them to survive another 10 years
Best of Luck !
TNhunter