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 A006513 Limit of the image of n after 2k iterates of `(3x+1)/2' map as k grows. (Formerly M0189) 4
 1, 2, 2, 1, 1, 1, 2, 2, 2, 2, 1, 2, 2, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 2, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The map is x -> (3x+1)/2 for odd x, and x -> x/2 for even x. REFERENCES R. K. Guy, Unsolved Problems in Number Theory, E16. N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). LINKS J. C. Lagarias, The 3x+1 problem and its generalizations, Amer. Math. Monthly, 92 (1985), 3-23. CROSSREFS Sequence in context: A275656 A228825 A201208 * A105224 A261627 A237112 Adjacent sequences:  A006510 A006511 A006512 * A006514 A006515 A006516 KEYWORD nonn AUTHOR EXTENSIONS More terms from Max Alekseyev, Oct 14 2012 STATUS approved

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Last modified February 20 00:28 EST 2019. Contains 320329 sequences. (Running on oeis4.)