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 A132937 #9 Mar 11 2014 01:34:10
%S A132937 23,2337,233747,23374753,2337475367,233747536779,23374753677983,
%T A132937 2337475367798389,233747536779838997,233747536779838997113,
%U A132937 233747536779838997113127,233747536779838997113127131
%N A132937 Concatenation of first n odd isolated primes.
%H A132937 Vincenzo Librandi, <a href="/A132937/b132937.txt">Table of n, a(n) for n = 1..250</a>
%H A132937 C. K. Caldwell, <a href="http://primes.utm.edu">The Prime Pages</a>.
%H A132937 Omar E. Pol, <a href="http://www.polprimos.com">Determinacion geometrica de los numeros primos y perfectos</a>.
%t A132937 With[{ips=Transpose[Select[Partition[Prime[Range[2,50]],3,1], Min[ Differences[#]]>2&]][[2]]},Table[FromDigits[Flatten[ IntegerDigits/@ Take[ips,n]]],{n,Length[ips]}]] (* _Harvey P. Dale_, Sep 17 2013 *)
%Y A132937 Isolated primes: A007510. Cf: A007908, A019518, A059996, A078795, A089933.
%K A132937 easy,nonn,base
%O A132937 1,1
%A A132937 _Omar E. Pol_, Sep 05 2007