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A271498 Smallest number in the trajectory of n under repeated application of the map k -> A271497(k). 3
1, 1, 1, 1, 1, 1, 7, 1, 1, 1, 7, 1, 7, 7, 1, 1, 1, 1, 7, 1, 7, 7, 1, 1, 7, 7, 1, 7, 1, 1, 31, 7, 7, 1, 7, 1, 7, 7, 7, 1, 7, 7, 7, 7, 1, 7, 31, 1, 7, 7, 1, 7, 7, 1, 31, 7, 7, 7, 31, 1, 31, 31, 7, 7, 7, 7, 7, 7, 1, 7, 1, 1, 7, 7, 7, 7, 1, 7, 31, 7, 1, 7, 1, 7, 1, 1, 1, 7, 1, 1, 31, 1, 31, 31, 7, 7, 7, 7 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,7
COMMENTS
It appears that every number n eventually reaches one of the loops (1,2,3), (7,14,21), (31,62,96), ..., (2^(2m)-1, 2^(2m+1)-2, 3(2^(2m)-1))), ...
LINKS
CROSSREFS
Cf. A271497,
Sequence in context: A348504 A344696 A336457 * A365332 A367483 A348281
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, Apr 16 2016
STATUS
approved

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Last modified May 21 19:35 EDT 2024. Contains 372738 sequences. (Running on oeis4.)