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

Terms

a(0) =13a(1) =53a(2) =113a(3) =213a(4) =453a(5) =853a(6) =909a(7) =1813a(8) =3413a(9) =3637a(10) =7253a(11) =7281a(12) =13653a(13) =14549a(14) =29013a(15) =29125a(16) =54613a(17) =58197a(18) =58253a(19) =116053a(20) =116501a(21) =218453a(22) =232789a(23) =233013a(24) =464213a(25) =466005a(26) =466033a(27) =873813a(28) =931157a(29) =932053