Odd numbers whose Collatz trajectory is a Sidon sequence.

Terms

a(0) =1a(1) =21a(2) =85a(3) =151a(4) =227a(5) =341a(6) =1365a(7) =5461a(8) =14563a(9) =21845a(10) =87381a(11) =349525a(12) =932067a(13) =1398101a(14) =5592405a(15) =22369621a(16) =26512143a(17) =39768215a(18) =59652323a(19) =89478485a(20) =357913941a(21) =1431655765a(22) =3817748707a(23) =5726623061