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 A194913 #5 Mar 30 2012 18:57:44 %S A194913 1,2,3,4,5,6,10,7,8,9,14,11,15,12,13,19,16,20,17,21,18,25,22,26,23,27, %T A194913 24,28,32,36,29,33,30,34,31,35,40,44,37,41,45,38,42,39,43,49,53,46,50, %U A194913 54,47,51,55,48,52,59,63,56,60,64,57,61,65,58,62,66,70,74,78 %N A194913 Inverse permutation of A194912; every positive integer occurs exactly once. %C A194913 A194913 is not equal to A194843. %t A194913 (See A194911.) %Y A194913 Cf. A194911, A194912. %K A194913 nonn %O A194913 1,2 %A A194913 _Clark Kimberling_, Sep 05 2011