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%I #10 Sep 06 2017 21:28:05
%S 0,1,2,3,5,4,7,6,10,11,8,9,15,14,13,12,20,21,22,23,17,16,19,18,30,31,
%T 28,29,27,26,25,24,40,41,42,43,45,44,47,46,34,35,32,33,39,38,37,36,60,
%U 61,62,63,57,56,59,58,54,55,52,53,51,50,49,48,81,80,83,82,84,85,86,87,91
%N a(n) = A100280(A100280(n)).
%C Permutation of the natural numbers with inverse A100281;
%C A064706(n) = a(n) for n<64.
%H Ivan Neretin, <a href="/A100282/b100282.txt">Table of n, a(n) for n = 0..8191</a>
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%K nonn,look
%O 0,3
%A _Reinhard Zumkeller_, Nov 11 2004