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%I #6 Jan 17 2025 16:31:56
%S 0,1,2,5,4,3,10,9,7,8,6,21,20,19,18,16,14,13,17,15,12,11,42,41,39,40,
%T 38,37,36,35,31,29,25,27,24,34,33,32,30,28,23,26,22,85,84,83,82,80,78,
%U 77,81,79,76,75,74,73,71,72,70,64,62,61,58,54,50,49,56,53
%N Inverse permutation to A380185.
%H Rémy Sigrist, <a href="/A380186/b380186.txt">Table of n, a(n) for n = 0..5461</a>
%H Rémy Sigrist, <a href="/A380186/a380186.gp.txt">PARI program</a>
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%e A380185(42) = 22, so a(22) = 42.
%o (PARI) \\ See Links section.
%Y Cf. A380185.
%K nonn,base,new
%O 0,3
%A _Rémy Sigrist_, Jan 15 2025