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 A071668 #5 Apr 30 2014 01:53:48
%S A071668 0,1,3,2,8,7,5,6,4,22,21,18,20,17,13,12,15,19,16,10,11,14,9,64,63,59,
%T A071668 62,58,50,49,55,61,57,46,34,54,45,36,35,32,40,31,41,43,52,60,56,47,48,
%U A071668 53,44,27,26,29,33,30,38,39,51,42,24,25,28,37,23,196,195,190,194,189
%N A071668 Permutation A057506 applied five times ("^5").
%H A071668 A. Karttunen, <a href="http://www.iki.fi/~kartturi/matikka/Nekomorphisms/gatomorf.htm">Gatomorphisms</a> (Includes the complete Scheme source for computing this sequence)
%H A071668 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>
%Y A071668 Inverse permutation: A071667 and also its car/cdr-flipped conjugate, i.e. A071668(n) = A057163(A071667(A057163(n))) = A057506(A071666(n)). Cf. also A071662, A071664, A071670.
%K A071668 nonn
%O A071668 0,3
%A A071668 _Antti Karttunen_, May 30 2002