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 A163486 #4 Mar 31 2012 13:21:18 %S A163486 0,2,3,1,11,10,8,9,12,14,15,13,7,6,4,5,47,45,44,46,43,42,40,41,35,33, %T A163486 32,34,39,38,36,37,48,50,51,49,59,58,56,57,60,62,63,61,55,54,52,53,31, %U A163486 29,28,30,27,26,24,25,19,17,16,18,23,22,20,21,191,189,188,190,180,181 %N A163486 Inverse permutation to A163485. %H A163486 A. Karttunen, <a href="/A163486/b163486.txt">Table of n, a(n) for n = 0..65535</a> %H A163486 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %Y A163486 Inverse: A163485. %K A163486 nonn %O A163486 0,2 %A A163486 _Antti Karttunen_, Aug 01 2009