%I #6 Dec 25 2016 01:03:20
%S 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,
%T 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,
%U 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
%N Length of preperiodic part of trajectory of n under iteration of the base-2 Kaprekar map in A164884
%C All base-2 cycles are fixed points, so one less than A164886.
%H Joseph Myers, <a href="/A164885/b164885.txt">Table of n, a(n) for n = 0..1024</a>
%H <a href="/index/K#Kaprekar_map">Index entries for the Kaprekar map</a>
%Y Cf. A164884, A163205, A164886, A164887.
%Y 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).
%K base,nonn
%O 0,3
%A _Joseph Myers_, Aug 29 2009
%E Cross-references edited by _Joseph Myers_, Sep 04 2009