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%I #9 Jul 29 2017 12:44:26
%S 1,2,3,5,4,6,7,8,9,11,10,13,12,14,17,15,16,19,20,18,23,22,21,24,25,26,
%T 27,28,29,31,30,32,34,33,35,36,39,37,38,40,42,43,41,44,47,46,45,49,48,
%U 50,51,53,52,55,54,58,56,57,59,63,60,61,62,66,64,67,65,71,68,70,69,73
%N Inverse permutation to A084489.
%H A. Karttunen, <a href="/A084507/a084507.scm.txt">Scheme-program for computing this sequence</a>
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%Y Used to compute A084491.
%K nonn
%O 1,2
%A _Antti Karttunen_, Jun 02 2003