This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A358143 #9 Nov 03 2022 10:07:18 %S A358143 1,2,3,4,5,6,8,7,9,12,11,13,10,14,19,18,21,16,20,15,17,22,30,28,34,26, %T A358143 32,29,31,24,33,23,27,25,35,48,45,54,43,52,47,55,39,50,46,49,37,53,41, %U A358143 51,36,42,40,44,38,56,77,72,87,68,85,76,89,64,81,74,88 %N A358143 Inverse permutation to A358124. %H A358143 Rémy Sigrist, <a href="/A358143/b358143.txt">Table of n, a(n) for n = 1..10946</a> %H A358143 Rémy Sigrist, <a href="/A358143/a358143.gp.txt">PARI program</a> %H A358143 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %e A358143 A358124(42) = 52, so a(52) = 42. %o A358143 (PARI) See Links section. %Y A358143 Cf. A358124. %K A358143 nonn %O A358143 1,2 %A A358143 _Rémy Sigrist_, Oct 31 2022