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 A087676 Consider recurrence b(0) = n/3, b(n) = b(0)*floor(b(n-1)); sequence gives number of steps to reach an integer, or -1 if no integer is ever reached. 1
 0, 3, 5, 0, 1, 1, 0, 12, 2, 0, 3, 7, 0, 1, 1, 0, 2, 7, 0, 2, 2, 0, 1, 1, 0, 5, 5, 0, 7, 4, 0, 1, 1, 0, 6, 2, 0, 4, 3, 0, 1, 1, 0, 2, 5, 0, 2, 2, 0, 1, 1, 0, 3, 3, 0, 6, 3, 0, 1, 1, 0, 3, 2, 0, 5, 5, 0, 1, 1, 0, 2, 3, 0, 2, 2, 0, 1, 1, 0, 5, 4, 0, 3, 4, 0, 1, 1, 0, 5, 2, 0, 3, 4, 0, 1, 1, 0, 2, 4, 0, 2, 2, 0, 1, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 6,2 COMMENTS It is conjectured that an integer is always reached if the initial value is >= 2. LINKS J. C. Lagarias and N. J. A. Sloane, Approximate squaring (pdf, ps), Experimental Math., 13 (2004), 113-128. CROSSREFS Cf. A087675, A087677. Sequence in context: A063866 A059106 A318521 * A291207 A058813 A336018 Adjacent sequences:  A087673 A087674 A087675 * A087677 A087678 A087679 KEYWORD nonn AUTHOR N. J. A. Sloane, following a suggestion of Bela Bajnok (bbajnok(AT)gettysburg.edu), Sep 27 2003 STATUS approved

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Last modified May 17 17:56 EDT 2021. Contains 343986 sequences. (Running on oeis4.)