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Number of distinct terms in iteration-list when cototient-function[=A051953] is iterated and the initial value is even number.
2

%I #3 Oct 15 2013 22:32:34

%S 3,4,5,5,6,6,6,6,7,7,7,7,7,7,8,7,8,8,8,8,9,8,8,8,9,8,9,8,9,9,8,8,9,9,

%T 9,9,9,9,10,9,10,10,9,9,10,9,9,9,9,10,10,9,10,10,10,9,11,10,10,10,9,9,

%U 11,9,11,10,10,10,10,10,10,10,10,10,11,10,10,11,10,10,11,11,11,11,11,10,11

%N Number of distinct terms in iteration-list when cototient-function[=A051953] is iterated and the initial value is even number.

%C Seems larger than A053475[2n+1]=A098201[n]

%F a[n]=A053475[2n]

%Y Cf. A051953, A053475.

%K nonn

%O 1,1

%A _Labos Elemer_, Sep 22 2004