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 A156328 #7 Nov 01 2012 07:54:58
%S A156328 5,23,11,29,13,31,19,37,23,41,29,47,41,59,43,61,53,71,61,79,71,89,79,
%T A156328 97,83,101,89,107,109,127,113,131,131,149,139,157,149,167,163,181,173,
%U A156328 191,179,197,181,199,193,211,211,229,223,241,233,251,239,257,251,269,263
%N A156328 List of prime pairs of the form (p, p+18).
%C A156328 The two primes p and p+18 are not necessarily adjacent.
%H A156328 Vincenzo Librandi, <a href="/A156328/b156328.txt">Table of n, a(n) for n = 1..1000</a>
%t A156328 Flatten[Select[{#, # + 18} &/@Prime[Range[1000]], PrimeQ[Last[#]]&]] (* _Vincenzo Librandi_, Nov 01 2012 *)
%Y A156328 Cf. A153418.
%K A156328 nonn,tabf
%O A156328 1,1
%A A156328 _Vincenzo Librandi_, Feb 08 2009