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 A143776 #2 Mar 31 2012 12:38:16
%S A143776 118,61318,32730551749894,233592048827366522661214,
%T A143776 2141662167055484666186673758527328459608763158,
%U A143776 2227825214147655788431110667440233064879987880421955931545425603586478
%N A143776 Numbers of the form : p1^p2-p2^p1, p1 and p2 twin primes.
%t A143776 lst={};Do[p1=Prime[n];If[PrimeQ[p2=p1+2],p=p1^p2-p2^p1;AppendTo[lst,p]],{n,5!}];lst
%K A143776 nonn
%O A143776 1,1
%A A143776 _Vladimir Joseph Stephan Orlovsky_, Aug 31 2008