Trajectory of 1 under map n->23n+1 if n odd, n->n/2 if n even.

Terms

a(0) =1a(1) =24a(2) =12a(3) =6a(4) =3a(5) =70a(6) =35a(7) =806a(8) =403a(9) =9270a(10) =4635a(11) =106606a(12) =53303a(13) =1225970a(14) =612985a(15) =14098656a(16) =7049328a(17) =3524664a(18) =1762332a(19) =881166a(20) =440583a(21) =10133410a(22) =5066705a(23) =116534216a(24) =58267108a(25) =29133554a(26) =14566777