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 A297104 #11 Jan 22 2018 15:48:15 %S A297104 1,3,4,2,6,7,8,9,5,11,14,12,17,13,15,10,23,18,26,20,19,22,32,21,16,27, %T A297104 24,28,42,29,44,31,30,36,33,25,53,41,37,35,60,40,63,39,43,50,70,38,34, %U A297104 45,49,47,79,51,48,52,55,64,88,54,92,69,56,46,57,58,102 %N A297104 Inverse permutation to A297022. %H A297104 Peter Kagey, <a href="/A297104/b297104.txt">Table of n, a(n) for n = 1..2500</a> %H A297104 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %Y A297104 Cf. A297022. %K A297104 nonn %O A297104 1,2 %A A297104 _Peter Kagey_, Dec 25 2017, following a suggestion from _Rémy Sigrist_