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%I #2 Mar 30 2012 17:27:48
%S 4,5,7,9,13,8,11,15,21,29,41,57,81,48,67,95,56,79,111,157,92,54,32,45,
%T 63,89,125,177,104,147,207,293,172,243,343,485,685,969,568,803,1135,
%U 1605,2269,3209,1880,2659,1558,2203,3115,4405,6229,8809,12457,17617
%N Retrograde trajectory of 4 under map k -> A094077(k).
%C Also trajectory of 4 under map k -> A115966(k).
%C Conjecture: Sequence is not periodic.
%C For the trajectory of 4 under map k -> A094077(k) see A117149.
%Y Cf. A094077, A115966, A117149.
%K nonn
%O 0,1
%A _Klaus Brockhaus_, Feb 28 2006