Trajectory of 1 under map n->47n+1 if n odd, n->n/2 if n even.

Terms

a(0) =1a(1) =48a(2) =24a(3) =12a(4) =6a(5) =3a(6) =142a(7) =71a(8) =3338a(9) =1669a(10) =78444a(11) =39222a(12) =19611a(13) =921718a(14) =460859a(15) =21660374a(16) =10830187a(17) =509018790a(18) =254509395a(19) =11961941566a(20) =5980970783a(21) =281105626802a(22) =140552813401