%I #4 Mar 30 2012 18:51:06

%S 0,1,5,7,3,4,19,2,13,23,11,12,49,43,58,79,9,29,21,15,10,99,16,28,39,6,

%T 64,120,27,104,164,110,62,127,25,143,45,8,135,107,33,141,46,14,162,85,

%U 41,30,66,48,60,83,37,91,152,17,355,80,170,331,286,47,336,190,56,114,97

%N A180077(A180077(n)).

%C Permutation of the natural numbers with inverse A180078;

%C a(A180076(n)) = A180076(a(n)) = A180077(n).

%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_, Aug 14 2010