%I #8 Jul 13 2013 12:04:25
%S 1,2,4,6,3,8,5,10,12,7,14,16,18,9,20,22,11,24,26,13,28,30,15,32,17,34,
%T 36,19,38,40,21,42,44,23,46,48,25,50,52,27,54,56,29,58,60,31,62,64,66,
%U 33,68,70,35,72,74,37,76,78,39,80,82,41,84,86,43,88,90
%N Inverse permutation to A210770.
%H Reinhard Zumkeller, <a href="/A210771/b210771.txt">Table of n, a(n) for n = 1..10000</a>
%H <a href="/index/Per#IntegerPermutation"> Index entries for sequences that are permutations of the natural numbers</a>
%o (Haskell)
%o import Data.List (elemIndex)
%o import Data.Maybe (fromJust)
%o a210771 n = fromJust (elemIndex n a210770_list) + 1
%K nonn
%O 1,2
%A _Reinhard Zumkeller_, Mar 25 2012
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