%I #4 Mar 30 2012 17:28:43
%S 1,2,2,3,2,3,3,3,2,3,3,4,3,2,3,4,3,3,4,4,4,4,3,3,4,3,2,3,3,4,3,3,2,4,
%T 3,4,3,3,3,3,2,3,3,3,3,4,3,4,3,3,3,4,2,3,3,4,4,4,3,4,4,4,3,4,3,4,3,3,
%U 3,4,3,3,4,4,3,4,3,3,3,3,2,3,3,2,3,3,2,2,2,3,3,3,2,3,3,4,2,4,2,2,2,3,2,4,2
%N (Length of preperiodic part) + (length of cycle) of trajectory of n under iteration of the base-3 Kaprekar map in A164993
%H Joseph Myers, <a href="/A164996/b164996.txt">Table of n, a(n) for n=0..2187</a>
%H <a href="/index/K#Kaprekar_map">Index entries for the Kaprekar map</a>
%Y Cf. A164993, A164995.
%Y In other bases: A164886 (base 2), A165015 (base 4), A165035 (base 5), A165054 (base 6), A165074 (base 7), A165093 (base 8), A165113 (base 9), A151963 (base 10).
%K base,nonn
%O 0,2
%A _Joseph Myers_, Sep 04 2009
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