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%I #9 Apr 14 2024 10:03:58
%S 0,1,2,4,3,8,5,6,16,9,10,11,7,32,17,18,19,12,20,13,14,64,33,34,35,21,
%T 36,22,23,37,24,25,26,15,128,65,66,67,38,68,39,40,69,41,42,43,27,70,
%U 44,45,46,28,47,29,30,256,129,130,131,71,132,72,73,133,74,75
%N Inverse permutation to A371590.
%H Rémy Sigrist, <a href="/A371591/a371591.gp.txt">PARI program</a>
%H <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%e A371590(42) = 44, so a(44) = 42.
%o (PARI) \\ See Links section.
%Y Cf. A371590.
%K nonn,base
%O 0,3
%A _Rémy Sigrist_, Mar 28 2024