%I A113221
%S A113221 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,21,23,19,25,18,27,20,29,22,
%T A113221 26,28,24,30,31,32,33,41,35,43,45,37,47,39,49,34,42,36,44,46,38,48,40,
%U A113221 61,51,63,53,65,67,55,69,57,58,59,60,50,62,64,52,81,54,83,56,85,71,87
%N A113221 A113220(A113220(n)).
%C A113221 Inverse integer permutation of T000004;
%C A113221 A113218(a(n)) = a(A113218(n)) = A113220(n).
%H A113221 <a href="Sindx_Per.html#IntegerPermutation">Index entries for sequences 
               that are permutations of the natural numbers</a>
%Y A113221 Sequence in context: A088382 A146295 A123719 this_sequence A113219 A023771 
               A132033
%Y A113221 Adjacent sequences: A113218 A113219 A113220 this_sequence A113222 A113223 
               A113224
%K A113221 nonn
%O A113221 0,3
%A A113221 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 18 2005