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
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Feb 08 2011
STATUS
approved