Numbers n such that the ratio of tripling steps to halving steps in the Collatz (3x+1) trajectory of n is greater than all previous ratios.

A248037

Numbers n such that the ratio of tripling steps to halving steps in the Collatz (3x+1) trajectory of n is greater than all previous ratios.

Terms

    a(0) =2a(1) =3a(2) =7a(3) =9a(4) =27a(5) =230631a(6) =626331a(7) =837799a(8) =1723519a(9) =3732423a(10) =5649499a(11) =6649279a(12) =8400511a(13) =63728127

External references