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%I #6 Mar 30 2012 18:50:59
%S 2,1,4,3,6,5,8,7,10,9,12,11,14,13,16,15,18,17,20,19,23,25,21,27,22,29,
%T 24,31,26,33,28,35,30,37,32,39,34,41,36,43,38,46,40,48,50,42,52,44,54,
%U 45,56,47,58,49,60,51,62,53,64,55,67,57,69,59,71,73,61,75,63,77,65,79
%N Self-inverse integer permutation induced by Beatty sequences for Sqrt(2)+1/2 and (4*Sqrt(2)+9)/7.
%H R. Zumkeller, <a href="/A137805/b137805.txt">Table of n, a(n) for n = 1..1000</a>
%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(A137803(n)) = A137804(n) and a(A137804(n)) = A137803(n).
%K nonn
%O 1,1
%A _Reinhard Zumkeller_, Feb 11 2008