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 A164885 Length of preperiodic part of trajectory of n under iteration of the base-2 Kaprekar map in A164884 13
 0, 1, 2, 1, 2, 2, 2, 1, 2, 0, 1, 2, 1, 2, 2, 1, 2, 1, 1, 1, 1, 0, 1, 2, 1, 1, 1, 2, 1, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 2, 1, 0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS All base-2 cycles are fixed points, so one less than A164886. LINKS Joseph Myers, Table of n, a(n) for n = 0..1024 CROSSREFS Cf. A164884, A163205, A164886, A164887. In other bases: A164995 (base 3), A165014 (base 4), A165034 (base 5), A165053 (base 6), A165073 (base 7), A165092 (base 8), A165112 (base 9), A151962 (base 10). Sequence in context: A278495 A254623 A055188 * A084989 A128538 A115588 Adjacent sequences:  A164882 A164883 A164884 * A164886 A164887 A164888 KEYWORD base,nonn AUTHOR Joseph Myers, Aug 29 2009 EXTENSIONS Cross-references edited by Joseph Myers, Sep 04 2009 STATUS approved

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Last modified June 19 00:55 EDT 2019. Contains 324217 sequences. (Running on oeis4.)