%I #14 Apr 17 2024 10:31:44
%S 0,1,3,2,5,7,6,4,15,11,9,13,10,14,12,8,27,19,23,31,17,25,29,21,30,22,
%T 18,26,20,28,24,16,39,55,63,47,51,35,43,59,45,61,53,37,57,41,33,49,54,
%U 38,46,62,34,50,58,42,60,44,36,52,40,56,48,32,119,87,71
%N Inverse permutation to A371974.
%H Rémy Sigrist, <a href="/A371975/b371975.txt">Table of n, a(n) for n = 0..8191</a>
%H Rémy Sigrist, <a href="/A371975/a371975.gp.txt">PARI program</a>
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%F A070939(a(n)) = A070939(n).
%e A371974(42) = 55, so a(55) = 42.
%o (PARI) \\ See Links section.
%Y Cf. A070939, A371974.
%K nonn,base
%O 0,3
%A _Rémy Sigrist_, Apr 15 2024