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%I #5 Mar 30 2012 18:51:00
%S 0,1,3,4,2,8,9,5,6,7,15,16,10,11,12,13,14,24,25,17,18,19,20,21,22,23,
%T 35,36,26,27,28,29,30,31,32,33,34,48,49,37,38,39,40,41,42,43,44,45,46,
%U 47,63,64,50,51,52,53,54,55,56,57,58,59,60,61,62,80,81,65,66,67,68,69,70
%N A143051(A143051(n)).
%C Permutation of the natural numbers, inverse: A143054;
%C a(A000290(n)) = A008865(n) for n>1;
%C a(A002522(n)) = A000290(n+1) for n>0.
%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_, Jul 20 2008
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