A060410 In the '3x+1' problem, take the sequence of starting values which set new records for the highest point of the trajectory before reaching 1 (A006884); sequence gives associated maximal value reached in the trajectory with that start.

2, 8, 26, 80, 4616, 6560, 19682, 20762, 125252, 638468, 3405068, 4076810, 13557212, 25071632, 53179010, 60506432, 296639576, 785412368, 1241055674, 1399161680, 8601188876, 12324038948, 26241642656, 28495741760

Offset: 1

Author

N. J. A. Sloane, Apr 06 2001

Keywords

• nonn

Links

• David Barina, Table of n, a(n) for n = 1..93 (first 88 terms from the web page of Tomás Oliveira e Silva)
• David Barina, Path records.
• Tomás Oliveira e Silva, Tables (gives many more terms)
• Index entries for sequences related to 3x+1 (or Collatz) problem

Crossrefs

Cf. A006884, A060409, A060411.