Trajectory of 3 under map n->33n+1 if n odd, n->n/2 if n even.

Terms

a(0) =3a(1) =100a(2) =50a(3) =25a(4) =826a(5) =413a(6) =13630a(7) =6815a(8) =224896a(9) =112448a(10) =56224a(11) =28112a(12) =14056a(13) =7028a(14) =3514a(15) =1757a(16) =57982a(17) =28991a(18) =956704a(19) =478352a(20) =239176a(21) =119588a(22) =59794a(23) =29897a(24) =986602a(25) =493301a(26) =16278934a(27) =8139467a(28) =268602412