%I #2 Mar 30 2012 17:26:16
%S 1,2,4,3,5,6,8,7,9,10,11,12,15,13,17,14,16,18,19,20,21,23,22,24,25,28,
%T 26,32,27,33,29,30,34,36,35,31,38,37,39,46,40,41,44,42,45,47,51,49,43,
%U 53,50,58,52,56,55,62,48,61,67,54,60,57,70,64,59,65,66,69,63,71,74,83
%N Position of n in A107896.
%C A107897(n)=pi(A073653(n)). Is A107896 a permutation of natural numbers?
%F a(n)=pi(A073653(n))
%Y Cf. A073653, A107896.
%K nonn
%O 1,2
%A _Zak Seidov_, May 26 2005