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%I #12 Jun 20 2018 01:36:04
%S 0,1,2,3,4,5,6,7,8,9,19,18,17,16,15,14,13,12,11,10,20,21,22,23,24,25,
%T 26,27,28,29,39,38,37,36,35,34,33,32,31,30,40,41,42,43,44,45,46,47,48,
%U 49,59,58,57,56,55,54,53,52,51,50,60,61,62,63,64,65,66,67,68,69,79,78,77
%N Inverse of A118757.
%C Permutation of the natural numbers with fixed points A118761: a(A118761(n)) = A118761(n);
%C A118760(n) = a(a(n)); a(n) = A118757(n) for n < 100.
%H R. Zumkeller, <a href="/A118758/b118758.txt">Table of n, a(n) for n = 0..30000</a>
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%Y Cf. A118764.
%K nonn,look
%O 0,3
%A _Reinhard Zumkeller_, May 01 2006
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