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 A082347 #6 Oct 15 2015 10:55:24 %S A082347 0,1,3,2,8,7,6,5,4,22,21,20,17,18,19,16,15,13,12,14,11,10,9,64,63,62, %T A082347 58,59,61,57,54,45,46,55,48,49,50,60,56,53,44,47,52,43,41,36,35,40,34, %U A082347 31,32,51,42,39,33,30,38,29,27,26,37,28,25,24,23,196,195,194,189,190 %N A082347 Permutation of natural numbers induced by the Catalan bijection gma082347 acting on the parenthesizations encoded by A014486/A063171. %H A082347 A. Karttunen, <a href="http://www.iki.fi/~kartturi/matikka/Nekomorphisms/gatomorf.htm">Gatomorphisms</a> (with the complete Scheme source) %H A082347 <a href="/index/Per#IntegerPermutationCatAuto">Index entries for signature-permutations induced by Catalan automorphisms</a> %o A082347 (Scheme functions implementing this automorphism on list-structures:) %o A082347 (define (gma082347! s) (cond ((pair? s) (gma069768! s) (gma082347! (cdr s)))) s) %Y A082347 Inverse of A082348. Occurs in A073200 as row 86. Cf. also A069768, A073288-A073289, A082345-A082346. %K A082347 nonn %O A082347 0,3 %A A082347 _Antti Karttunen_, Apr 17 2003