A132348 Lengths of the 3x+1 trajectories associated with the record values in A006884.

0, 1, 7, 16, 17, 111, 47, 97, 131, 170, 161, 201, 170, 184, 255, 307, 160, 334, 231, 247, 162, 183, 406, 441, 242, 439, 328, 367, 370, 427, 430, 399, 363, 322, 573, 400, 483, 576, 606, 483, 572, 438, 475, 592, 770, 726, 543, 836, 555, 770, 871, 796, 1109, 755

Offset: 1

Author

N. J. A. Sloane, Nov 10 2007

Keywords

• nonn

References

• R. B. Banks, Slicing Pizzas, Racing Turtles and Further Adventures in Applied Mathematics, Princeton Univ. Press, 1999. See p. 96.

Links

• Hugo Pfoertner, Table of n, a(n) for n = 1..97
• Brian Hayes, Computer Recreations: On the ups and downs of hailstone numbers, Scientific American, 250 (No. 1, 1984), pp. 10-16.

Crossrefs

Cf. A006577, A006884.

Formula

a(n) = A006577(A006884(n)). - Hugo Pfoertner, Jan 13 2025

Extensions

Extended by T. D. Noe, Apr 27 2010