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%I #5 Aug 15 2015 03:30:55
%S 0,1,2,3,4,5,6,7,8,9,10,11,15,20,25,21,30,31,35,41,40,12,45,51,50,13,
%T 115,61,60,14,81,71,32,165,92,43,103,16,54,91,114,17,65,101,125,18,76,
%U 111,126,19,121,22,26,70,131,87,36,141,46,42,151,52,56,62
%N a(n) = A065649(A065649(n)).
%C Permutation of the nonnegatve integers with inverse A261294;
%C a(A065650(n)) = A065650(a(n)) = A065649(n).
%H Reinhard Zumkeller, <a href="/A261293/b261293.txt">Table of n, a(n) for n = 0..10000</a>
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%o (Haskell)
%o a261293 = a065649 . a065649
%Y Cf. A065649, A065650, A261294 (inverse), A261279 (fixed points).
%K nonn
%O 0,3
%A _Reinhard Zumkeller_, Aug 14 2015