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%I #4 Mar 30 2012 18:51:05
%S 1,2,3,4,5,6,7,8,9,10,11,12,16,14,13,15,17,18,19,20,21,22,23,24,27,28,
%T 25,26,29,30,33,34,31,32,35,36,37,39,40,38,41,42,43,44,45,46,47,48,49,
%U 51,52,50,53,54,55,56,57,58,60,59,62,61,63,64,65,66,67,69,70,68,71,72
%N A121878(A121878(n)).
%C Permutation of positive integers;
%C a(A167906(n)) = A167906(n);
%C a(A167905(n)) = A167905(a(n)) = A121878(n).
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%K nonn
%O 1,2
%A _Reinhard Zumkeller_, Nov 15 2009
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