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 A130143 #2 Mar 31 2012 14:40:00 %S A130143 6,2,0,2,80,14,26,28,59,104,104,14,268,628,11,128,16,91,143,165,36, %T A130143 360,498,12,67,47 %N A130143 Gaps between consecutive primes in decimal expansion of Pi (A000796). %e A130143 a(1)=6 because first prime 2 occurs after 314159, %e A130143 a(2)=2 because second prime 3 occurs after 26, %e A130143 a(3)=0 because third prime 5 is adjacent to 3, ... %K A130143 nonn,base %O A130143 1,1 %A A130143 _Jani Melik_, Aug 01 2007