1207701domain: NAppears in sequencesTrajectory of 9 under map x->x + (x-with-digits-reversed).at n=11A033651Trajectory of 27 under map x->x + (x-with-digits-reversed).at n=10A033659Trajectory of 99 under map x->x + (x-with-digits-reversed).at n=9A033674Column 6 of triangle A055907.at n=12A055912