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Minima when the mapping of A072010 is applied to n repeatedly.
2

%I #4 Mar 30 2012 18:50:24

%S 1,2,1,4,5,2,5,8,1,10,1,4,5,10,5,16,17,2,17,20,5,2,5,8,25,10,1,20,29,

%T 10,29,32,1,34,35,4,5,34,5,40,41,10,41,4,5,10,5,16,25,50,17,20,5,2,5,

%U 40,17,58,17,20,5,58,5,64,35,2,35,68,5,70,5,8,25,10,25,68,5

%N Minima when the mapping of A072010 is applied to n repeatedly.

%e The trajectory of 71 under the A072010-mapping is:

%e 71 ->69 ->21 ->5 ->7 ->5 ..., therefore a(71) = 5.

%Y Cf. A072015.

%K nonn

%O 1,2

%A _Reinhard Zumkeller_, Jun 05 2002