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A165112 Length of preperiodic part of trajectory of n under iteration of the base-9 Kaprekar map in A165110 10
0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 3, 2, 2, 0, 3, 1, 2, 1, 2, 1, 3, 2, 2, 1, 3, 1, 2, 1, 2, 1, 3, 2, 2, 2, 3, 1, 2, 1, 2, 1, 3, 2, 2, 2, 3, 0, 2, 1, 2, 1, 3, 1, 2, 2, 3, 1, 2, 1, 2, 1, 3, 1, 2, 2, 3, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 1, 2, 1, 2, 2, 4, 3, 1, 1, 2, 3, 4, 2, 1, 2, 4, 3, 1, 1, 2, 3, 4, 2, 2, 4, 3, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,10

LINKS

Joseph Myers, Table of n, a(n) for n=0..6561

Index entries for the Kaprekar map

CROSSREFS

Cf. A165110, A165113.

In other bases: A164885 (base 2), A164995 (base 3), A165014 (base 4), A165034 (base 5), A165053 (base 6), A165073 (base 7), A165092 (base 8), A151962 (base 10).

Sequence in context: A029635 A203301 A107456 * A256106 A077480 A059829

Adjacent sequences:  A165109 A165110 A165111 * A165113 A165114 A165115

KEYWORD

base,nonn

AUTHOR

Joseph Myers, Sep 04 2009

STATUS

approved

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Last modified February 21 02:05 EST 2018. Contains 299388 sequences. (Running on oeis4.)