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 A055182 #4 Mar 30 2012 18:57:03 %S A055182 4,1,2,3,5,6,7,8,9,10,12,14,13,17,11,15,19,16,22,25,27,20,24,29,21,18, %T A055182 26,32,23,36,28,40,31,30,43,34,46,35,49,37,52,42,38,33,55,45,44,41,39, %U A055182 58,50,63,53,66,57,54,48,69,59,74,62,60,51 %N A055182 n-th distinct number to appear in A055174.; also the n-th to appear in A055192. %C A055182 Conjecture: this sequence is a permutation of the positive integers. %K A055182 nonn %O A055182 1,1 %A A055182 _Clark Kimberling_, Apr 27 2000