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 A353650 #9 May 03 2022 16:52:10 %S A353650 0,1,2,4,6,5,3,13,7,9,11,15,17,20,10,8,16,12,14,18,37,39,41,21,23,25, %T A353650 31,27,29,33,35,43,46,48,54,50,52,56,60,58,63,28,30,32,24,22,34,26,47, %U A353650 49,19,36,38,40,42,51,53,55,104,44,112,114,108,106,116,110 %N A353650 Inverse permutation to A353649. %H A353650 Rémy Sigrist, <a href="/A353650/b353650.txt">Table of n, a(n) for n = 0..10000</a> %H A353650 Rémy Sigrist, <a href="/A353650/a353650.gp.txt">PARI program</a> %H A353650 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %e A353650 A353649(7) = 8 so a(8) = 7. %o A353650 (PARI) See Links section. %Y A353650 Cf. A353649. %K A353650 nonn,look,base %O A353650 0,3 %A A353650 _Rémy Sigrist_, May 01 2022