Trajectory of 40 under prime factor concatenation procedure.

Terms

a(0) =40a(1) =2a(2) =2a(3) =2a(4) =5a(5) =5a(6) =5a(7) =89a(8) =3a(9) =3a(10) =3a(11) =3a(12) =3a(13) =23a(14) =7a(15) =7a(16) =59a(17) =1153a(18) =29a(19) =2675557a(20) =3a(21) =31a(22) =3147049a(23) =809a(24) =1409a(25) =4019a(26) =3a(27) =53639a(28) =502807a(29) =3