%I #4 Mar 30 2012 18:51:05

%S 1,5,8,4,6,13,3,10,9,11,2,12,7,14,17,25,20,23,18,19,15,24,21,22,16,26,

%T 32,33,27,31,28,30,29,34,40,35,38,39,37,36,41,45,49,42,44,48,43,50,47,

%U 46,51,55,59,54,63,62,57,52,60,56,58,53,61,64,70,65,68,69,67,66,71,74

%N A075380(A075380(n)).

%C Permutation of positive integers;

%C a(A075381(n)) = A075381(n);

%C a(A167902(n)) = A167902(a(n)) = A075380(n).

%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>

%K nonn

%O 1,2

%A _Reinhard Zumkeller_, Nov 15 2009