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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
OFFSET
0,4
COMMENTS
Why is this always a power of 3?
LINKS
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
KEYWORD
nonn,base
AUTHOR
Philippe Deléham, Apr 30 2005
STATUS
approved