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

Terms

a(0) =1a(1) =18a(2) =9a(3) =154a(4) =77a(5) =1310a(6) =655a(7) =11136a(8) =5568a(9) =2784a(10) =1392a(11) =696a(12) =348a(13) =174a(14) =87a(15) =1480a(16) =740a(17) =370a(18) =185a(19) =3146a(20) =1573a(21) =26742a(22) =13371a(23) =227308a(24) =113654a(25) =56827a(26) =966060a(27) =483030a(28) =241515a(29) =4105756