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 A201005 #10 Jan 08 2013 09:10:32 %S A201005 5,701,13741001,269351100901,15279919186598182658375804155696711901 %N A201005 Primes in the Lucas U(5,-1) sequence. %C A201005 The Lucas U(5,-1) sequence is 0, 1, 5, 26, 135,... which is A052918 with a leading zero. These sequence here comprises the U(5,-1,n) subsequence at indices n = 2, 5, 11, 17, 53,... %H A201005 Wikipedia, <a href="http://en.wikipedia.org/wiki/Lucas_sequence">Lucas sequence</a> %K A201005 nonn %O A201005 1,1 %A A201005 _R. J. Mathar_, Jan 08 2013