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 A065282 #8 Mar 18 2022 21:50:32 %S A065282 1,5,2,9,11,4,3,17,19,21,23,8,6,10,7,33,35,37,39,41,43,45,47,16,12,18, %T A065282 13,20,14,22,15,65,67,69,71,73,75,77,79,81,83,85,87,89,91,93,95,32,24, %U A065282 34,25,36,26,38,27,40,28,42,29,44,30,46,31,129,131,133,135,137,139,141 %N A065282 Inverse permutation to A065281. %H A065282 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %K A065282 nonn %O A065282 1,2 %A A065282 _Antti Karttunen_, Oct 28 2001