What should come in place of the question mark (?) in the…

What should come in place of the question mark (?) in the following number series? 11 19 29 41 55 ?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #26770