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 A075168 #2 May 01 2014 02:44:55 %S A075168 0,1,2,3,5,4,6,7,12,11,9,10,15,14,16,8,13,30,28,29,24,23,25,26,40,39, %T A075168 37,38,43,42,19,18,32,33,84,85,80,79,81,82,68,67,65,66,71,70,72,27,41, %U A075168 114,112,113,108,107,109,110,124,123,121,122,52,51,47,17,31,89,93,94 %N A075168 Position of A075170(n) in A014486. %C A075168 See A075171. %o A075168 (define (A075168 n) (CatalanRankGlobal (parenthesization->binexp (binruns->parenthesization n)))) %Y A075168 Inverse of A075169. %K A075168 nonn %O A075168 0,3 %A A075168 _Antti Karttunen_, Sep 13 2002