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 A088168 #3 Mar 30 2012 18:50:38 %S A088168 1,3,4,39,6,15,10,12,16,22,20,18,75,38,32,24,52,44,36,297,30,575,50, %T A088168 40,76,399,231,48,66,615,70,98,134,88,104,441,60,80,100,84,72,108,136, %U A088168 1085,90,112,96,214,152,132,585,154,156,126,174,176,196,170,186,208 %N A088168 Smallest number m such that A088167(m)=n. %C A088168 A088167(a(n))=n and A088167(k)<>n for k<a(n). %K A088168 nonn %O A088168 1,2 %A A088168 _Reinhard Zumkeller_, Sep 21 2003