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 A194834 #5 Mar 30 2012 18:57:44 %S A194834 1,2,3,6,4,5,9,7,10,8,13,11,14,12,15,18,21,16,19,17,20,24,27,22,25,28, %T A194834 23,26,36,31,34,29,32,35,30,33,44,39,42,37,45,40,43,38,41,53,48,51,46, %U A194834 54,49,52,47,55,50,63,58,66,61,56,64,59,62,57,65,60,74,69,77 %N A194834 Inverse permutation of A194833; every positive integer occurs exactly once. %t A194834 (See A194832.) %Y A194834 Cf. A194832, A194833. %K A194834 nonn %O A194834 1,2 %A A194834 _Clark Kimberling_, Sep 03 2011