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 A140483 #3 Mar 30 2012 17:35:01 %S A140483 1,4,9,64,81,784,1521,29584,34225,132496,136161,4999696,5076009, %T A140483 15492096,15547249,299982400,300086329,1849172004,1849430025 %N A140483 Squares in A064491. %C A140483 These are the places where A064491 changes parity. %Y A140483 Cf. A064491, A140484. %K A140483 nonn %O A140483 1,2 %A A140483 Franklin T. Adams-Watters, Jun 25 2008 %E A140483 a(16)-a(19) from _Donovan Johnson_, Oct 06 2009