Odd numbers producing exactly 3 odd numbers in the Collatz (3x+1) iteration.

Terms

a(0) =3a(1) =13a(2) =53a(3) =113a(4) =213a(5) =227a(6) =453a(7) =853a(8) =909a(9) =1813a(10) =3413a(11) =3637a(12) =7253a(13) =7281a(14) =13653a(15) =14549a(16) =14563a(17) =29013a(18) =29125a(19) =54613a(20) =58197a(21) =58253a(22) =116053a(23) =116501a(24) =218453a(25) =232789a(26) =233013a(27) =464213a(28) =466005a(29) =466033