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 A088174 #6 Mar 30 2012 17:29:09 %S A088174 1,2,4,6,18,30,36,78,90,114,120,132,138,144,150,156,162,168,192,210, %T A088174 216,222,246,264,288,306,312,318,336,372,396,462,564,606,624,630,642, %U A088174 648,654,678,714,738,774,792,810,816,840,864,918,936,1002,1020,1038,1062 %N A088174 Numbers n such that n^2 appears in A088173. %Y A088174 Cf. A087592, A088173. %K A088174 easy,nonn %O A088174 1,2 %A A088174 _Zak Seidov_, Sep 22 2003 %E A088174 Corrected and extended by _Ray Chandler_, Sep 25 2003