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 A102747 #5 Sep 24 2013 09:21:35
%S A102747 2,7,103,229561,863833
%N A102747 Primes p(n) such that p(n)#+p(n+1) is divisible by p(n+2).
%e A102747 7 belongs to this sequence since 2*3*5*7+11 is divisible by 13.
%o A102747 (PARI) { isgood(p) = local(r,p2,p3); p2=nextprime(p+1); p3=nextprime(p2+1); r=Mod(1,p3); forprime(q=1,p,r*=q); r+=p2; return(r==0); }
%Y A102747 Cf. A002110, A058233.
%K A102747 hard,more,nonn
%O A102747 1,1
%A A102747 _Max Alekseyev_, Feb 09 2005
%E A102747 863833 from _Ryan Propper_, Jan 07 2008