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%I #7 Mar 30 2012 18:50:48
%S 1,2,5,4,7,3,13,8,9,10,19,12,23,11,6,16,30,18,41,20,14,17,47,24,25,26,
%T 27,28,57,15,61,32,21,29,34,36,66,39,22,40,71,33,87,44,45,46,94,48,49,
%U 50,31,52,102,54,35,56,42,55,110,60,115,62,63,64,37,43,123,68,51,38,139
%N If n is squarefree then A100114(A100112(n)) else n.
%C Permutation of the natural numbers with inverse A100115;
%C a(A013929(n)) = A013929(n).
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%Y Cf. A005117.
%K nonn
%O 1,2
%A _Reinhard Zumkeller_, Nov 07 2004