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A185666
Trajectory of 649 under the 3x+1 map of A014682.
0
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.
CROSSREFS
Sequence in context: A229155 A154358 A252538 * A114047 A288142 A157915
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Feb 08 2011
STATUS
approved