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 A132936 #3 Mar 11 2014 01:34:10 %S A132936 2,223,22337,2233747,223374753,22337475367,2233747536779, %T A132936 223374753677983,22337475367798389,2233747536779838997, %U A132936 2233747536779838997113,2233747536779838997113127 %N A132936 Concatenation of first n isolated primes. %H A132936 C. K. Caldwell, <a href="http://primes.utm.edu">The Prime Pages</a>. %H A132936 Omar E. Pol, <a href="http://www.polprimos.com">Determinacion geometrica de los numeros primos y perfectos</a>. %Y A132936 Isolated primes: A007510. Cf: A007908, A019518, A059996, A078795, A089933. %K A132936 easy,nonn,base %O A132936 1,1 %A A132936 _Omar E. Pol_, Sep 05 2007