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

1,3

References

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

Links

Table of n, a(n) for n=1..54.

Brian Hayes, Computer Recreations: On the ups and downs of hailstone numbers, Scientific American, 250 (No. 1, 1984), pp. 10-16.

Crossrefs

Sequence in context: A101681 A067776 A193688 * A177763 A101073 A026226

Adjacent sequences: A132345 A132346 A132347 * A132349 A132350 A132351

Keyword

nonn

Author

N. J. A. Sloane, Nov 10 2007

Extensions

Extended by T. D. Noe, Apr 27 2010

Status

approved