A037106 Trajectory of 3 under map n->17n+1 if n odd, n->n/2 if n even

3, 52, 26, 13, 222, 111, 1888, 944, 472, 236, 118, 59, 1004, 502, 251, 4268, 2134, 1067, 18140, 9070, 4535, 77096, 38548, 19274, 9637, 163830, 81915, 1392556, 696278, 348139, 5918364, 2959182, 1479591