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 A084460 #9 Jul 29 2017 12:48:11 %S A084460 4,1,2,7,8,3,5,11,9,13,6,15,16,10,18,12,20,21,22,14,17,25,26,27,28,19, %T A084460 23,31,32,29,34,35,24,37,38,39,30,41,33,43,44,45,46,36,48,40,50,51,52, %U A084460 53,54,42,47,57,58,59,55,61,62,49,64,65,66,67,56,69,70,60,72,73,74,75 %N A084460 Inverse permutation to A084459. %H A084460 A. Karttunen, <a href="/A084507/a084507.scm.txt">Scheme-program for computing this sequence</a> %H A084460 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %Y A084460 Used to compute A084461. %K A084460 nonn %O A084460 1,1 %A A084460 _Antti Karttunen_, Jun 02 2003