%I #6 Mar 30 2012 18:50:53
%S 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,22,20,24,18,26,19,29,21,
%T 27,23,28,25,30,31,32,33,42,35,44,38,47,40,49,34,43,36,45,37,46,39,48,
%U 41,62,51,65,53,67,56,69,58,59,60,61,50,63,52,64,54,83,55,85,57,87,71,89
%N A113218(A113218(n)).
%C Inverse integer permutation of A113221;
%C A113220(a(n)) = a(A113220(n)) = A113218(n).
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%K nonn
%O 0,3
%A _Reinhard Zumkeller_, Oct 18 2005