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%I #14 Feb 22 2013 21:36:40
%S 3,6,1,10,13,2,17,20,23,4,27,30,5,34,37,40,7,44,47,8,51,54,9,58,61,64,
%T 11,68,71,12,75,78,81,14,85,88,15,92,95,16,99,102,105,18,109,112,19,
%U 116,119,122,21,126,129,22,133,136,139,24,143,146
%N Beginning with the natural numbers, swap [ k*sqrt(2) ] and [ k*(2 + sqrt(2)) ], for all k >= 1.
%C Self-inverse integer permutation induced by Beatty sequences for sqrt(2) and 2+sqrt(2). - _Reinhard Zumkeller_, Jun 11 2005
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/BeattySequence.html">Beatty Sequence</a>
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%H <a href="/index/Be#Beatty">Index entries for sequences related to Beatty sequences</a>
%F a(A001951(n)) = A001952(n) and a(A001952(n)) = A001951(n). - _Reinhard Zumkeller_, Jun 11 2005
%Y Cf. A026255, A026262.
%K nonn
%O 1,1
%A _Clark Kimberling_
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