Talking about 16 generations. Those people if they build a stable society won't have more connection to any planet other than old legend that there used to be a world beyond the spacecraft. They'll be native "spacecraftians", they'll just keep living there. Until their resources are exhausted, that is.
I personally don't believe the travel is possible with so few people. To support advanced machinery, one needs a population in the several millions and huge mining resources. Otherwise no steel mills, no concrete, no microchips. Also no engineers, medical doctors, university professors without a large enough population to pick the best.