A033963 Trajectory of 1 under map n->11n+1 if n odd, n->n/2 if n even

1, 12, 6, 3, 34, 17, 188, 94, 47, 518, 259, 2850, 1425, 15676, 7838, 3919, 43110, 21555, 237106, 118553, 1304084, 652042, 326021, 3586232, 1793116, 896558, 448279, 4931070, 2465535, 27120886, 13560443