%I
%S 177,246,245,236,230,178,244,275,295,342,274,326,247,253,281,285,293,
%T 333,286,302
%N Start with n, apply the map k > A169639(k) until trajectory converges; sequence give full list of the 20 possible limit points.
%C There is a slight ambiguity in the definition, but I believe these are all the numbers which eventually return to themselves under iteration of k > A169639(k).  _N. J. A. Sloane_, Jun 11 2021
%K nonn,word
%O 1,1
%A _Jacques ALARDET_, Apr 04 2010
%E Edited by _N. J. A. Sloane_, Apr 05 2010
