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 A022603 #6 Mar 31 2012 14:39:52 %S A022603 4,22,53,129,2227,1357200840 %N A022603 Indices of primes of form 3^p - 2. %H A022603 <a href="http://www.borve.org/primeness/intro.html">Exploring Primeness Project</a> %e A022603 The second prime that is 2 less than a power of 3 is 79, which is p(22), so 22 is second on the list. %Y A022603 Cf. A014232. %K A022603 nonn %O A022603 1,1 %A A022603 _Neil Fernandez_