A033965 Trajectory of 1 under map n->17n+1 if n odd, n->n/2 if n even

1, 18, 9, 154, 77, 1310, 655, 11136, 5568, 2784, 1392, 696, 348, 174, 87, 1480, 740, 370, 185, 3146, 1573, 26742, 13371, 227308, 113654, 56827, 966060, 483030, 241515, 4105756, 2052878, 1026439, 17449464