A033966 Trajectory of 1 under map n->19n+1 if n odd, n->n/2 if n even

1, 20, 10, 5, 96, 48, 24, 12, 6, 3, 58, 29, 552, 276, 138, 69, 1312, 656, 328, 164, 82, 41, 780, 390, 195, 3706, 1853, 35208, 17604, 8802, 4401, 83620, 41810, 20905, 397196, 198598, 99299, 1886682, 943341, 17923480