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%I #6 Mar 30 2012 18:50:19
%S 4,6,2,8,1,7,3,5,9,10,11,12,13,17,19,15,21,14,25,27,31,16,35,37,39,43,
%T 47,23,49,18,53,55,57,61,63,29,67,71,73,33,77,20,81,83,85,22,89,93,95,
%U 99,101,41,103,107,111,113,117,45,119,24,123,127,129,133,137,51,141
%N a(n) = A066248(A066248(n)).
%C Permutation of natural numbers.
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%K nonn
%O 1,1
%A _Reinhard Zumkeller_, Dec 09 2001