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

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

%S 2,3,3,3,4,3,3,4,3,3,5,3,4,5,3,3,4,4,3,5,3,3,6,3,4,4,3,5,6,3,3,6,4,3,

%T 5,3,3,5,4,3,6,3,6,4,3,4,5,4,3,6,3,3,7,3,3,6,3,6,7,4,4,4,5,3,7,3,5,7,

%U 3,3,5,4,5,7,3,3,7,5,3,6,4,3,7,3,4,7,3,6,4,3,3,7,4,6,7,3,3,7,3,3,6,5,7,6,4

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

%C Seems smaller than A053475[2n]=A098200[n]

%F a[n]=A053475[ -1+2n]

%Y Cf. A051953, A053475, A098200.

%K nonn

%O 1,1

%A _Labos Elemer_, Sep 22 2004