A185666 Trajectory of 649 under the 3x+1 map of A014682.

649, 974, 487, 731, 1097, 1646, 823, 1235, 1853, 2780, 1390, 695, 1043, 1565, 2348, 1174, 587, 881, 1322, 661, 992, 496, 248, 124, 62, 31, 47, 71, 107, 161, 242, 121, 182, 91, 137, 206, 103, 155, 233, 350, 175, 263, 395, 593, 890, 445, 668, 334, 167, 251, 377, 566, 283, 425, 638, 319, 479, 719, 1079, 1619, 2429, 3644, 1822, 911, 1367, 2051, 3077, 4616, 2308, 1154, 577, 866, 433, 650, 325, 488, 244, 122, 61, 92, 46, 23, 35, 53, 80, 40, 20, 10, 5, 8, 4, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1

Offset

1,1

Comments

Used as an example by Lagarias, Fig. 1, page 7. The graph shows a typical "hailstone" pattern.

References

J. C. Lagarias, ed., The Ultimate Challenge: The 3x+1 Problem, Amer. Math. Soc., 2010.

Links

Table of n, a(n) for n=1..101.

Index entries for sequences related to 3x+1 (or Collatz) problem

Crossrefs

Sequence in context: A229155 A154358 A252538 * A114047 A288142 A157915

Adjacent sequences: A185663 A185664 A185665 * A185667 A185668 A185669

Keyword

nonn

Author

N. J. A. Sloane, Feb 08 2011

Status

approved