

A105159


Consider trajectory of n under repeated application of map k > A105108(k); a(n) = length of cycle.


0



1, 1, 1, 3, 3, 3, 3, 3, 3, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 1, 9, 1, 9, 3, 1, 9, 3, 1, 9, 3, 1, 9, 3, 1, 9, 3, 1, 9, 3, 1, 9, 3, 1
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OFFSET

0,4


COMMENTS

Why is this always a power of 3?


LINKS

Table of n, a(n) for n=0..52.
David Applegate, Benoit Cloitre, Philippe Deléham and N. J. A. Sloane, Sloping binary numbers: a new sequence related to the binary numbers [pdf, ps].


CROSSREFS

Cf. A102370, A105108, A105154.
Sequence in context: A111233 A210746 A283986 * A209291 A176873 A227727
Adjacent sequences: A105156 A105157 A105158 * A105160 A105161 A105162


KEYWORD

nonn,base


AUTHOR

Philippe Deléham, Apr 30 2005


STATUS

approved



