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 A138689 #4 Mar 06 2013 14:14:49
%S A138689 30,35,51,75,147,195,315,387,555,867,987,1395,1707,1875,2235,2835,
%T A138689 3507,3747,4515,5067,5355,6267,6915,7947,9435,10227,10635,11475,11907,
%U A138689 12795,16155,17187,18795,19347,22227,22827,24675,26595,27915,29955,32067
%N A138689 Numbers of the form 26+p^2 (where p is a prime).
%C A138689 26+p^2 is divisible by 3 for any prime p>3; _Zak Seidov_
%t A138689 Table[2*13 + Prime[p + 1]^2, {p, 0, 100}]
%Y A138689 Cf. A138479, A138685, A138686.
%K A138689 nonn
%O A138689 1,1
%A A138689 _Artur Jasinski_, Mar 26 2008