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%I #10 Oct 28 2020 08:10:40
%S 1,2,5,3,7,4,11,10,6,8,19,14,33,12,15,18,38,22,42,9,23,20,54,26,68,32,
%T 27,13,73,16,78,37,28,39,60,35,82,41,34,17,91,24,95,21,44,53,120,36,
%U 90,31,49,64,125,56,29,25,43,72,145,45,152,79,48,81,69,57,157,40,55,46
%N a(n) = index k such that A338338(k) = n, or -1 if n does not appear in A338338.
%C There is a strong conjecture that A338338 is a permutation of the positive integers. If that is true, this is the inverse permutation.
%H Rémy Sigrist, <a href="/A338347/b338347.txt">Table of n, a(n) for n = 1..10000</a>
%H Rémy Sigrist, <a href="/A338347/a338347.gp.txt">PARI program for A338347</a>
%o (PARI) See Links section.
%Y Cf. A338338-A338349.
%K nonn
%O 1,2
%A _N. J. A. Sloane_, Oct 27 2020
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