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%I #9 Sep 04 2024 18:34:20
%S 2,1,7,3,29,30,31,4,8,9,10,5,121,122,123,6,16,11,32,33,34,35,36,12,17,
%T 13,497,498,499,500,501,14,18,15,67,37,46,38,124,19,20,125,126,127,
%U 128,129,130,21,47,39,68,40,48,41,2017,22,2018,2019,2020,2021,2022,2023
%N Inverse permutation to sequence A113820.
%H Rémy Sigrist, <a href="/A115629/b115629.txt">Table of n, a(n) for n = 1..10000</a>
%H Rémy Sigrist, <a href="/A115629/a115629.gp.txt">PARI program</a>
%e A113820(29) = 5, so a(5) = 29.
%o (PARI) \\ See Links section.
%Y Cf. A113820.
%K nonn,base
%O 1,1
%A _Klaus Brockhaus_, Jan 27 2006