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 A171697 #4 Mar 30 2012 18:52:38 %S A171697 1,119,121,143,145,185,187,203,205,215,217,245,247,287,289,299,301, %T A171697 323,325,341,343,413,415,425,427,473,475,515,517,527,529,533,535,551, %U A171697 553,581,583,623,625,635,637,665,667,695,697,713,715,779,781,791,793,803 %N A171697 1 together with pairs of composites of the form (6n-1, 6n+1). %Y A171697 Cf. A001477, A060461, A171696. %K A171697 nonn,easy,less %O A171697 1,2 %A A171697 _Juri-Stepan Gerasimov_, Dec 15 2009