In the '3x+1' problem, these values for the starting value set new records for number of steps to reach 1.

A006877

In the '3x+1' problem, these values for the starting value set new records for number of steps to reach 1.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =6a(4) =7a(5) =9a(6) =18a(7) =25a(8) =27a(9) =54a(10) =73a(11) =97a(12) =129a(13) =171a(14) =231a(15) =313a(16) =327a(17) =649a(18) =703a(19) =871a(20) =1161a(21) =2223a(22) =2463a(23) =2919a(24) =3711a(25) =6171a(26) =10971a(27) =13255a(28) =17647a(29) =23529

External references