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 A082321 #5 Mar 31 2012 14:02:19
%S A082321 0,1,3,2,7,6,8,4,5,17,12,16,11,22,18,13,14,9,21,15,10,20,19,45,54,31,
%T A082321 26,40,44,53,30,25,39,63,59,50,36,46,55,32,27,41,42,51,28,23,37,62,58,
%U A082321 49,35,43,52,29,24,38,61,57,48,34,60,56,47,33,64,129,138,157,166,180
%N A082321 Permutation A057501 applied five times ("^5").
%H A082321 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations induced by Catalan automorphisms</a>
%F A082321 a(n) = A082315(A082317(n))
%Y A082321 Inverse of A082322. Occurs in A073200. Cf. also A082323-A082324.
%K A082321 nonn
%O A082321 0,3
%A A082321 _Antti Karttunen_, Apr 17 2003