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 A104837 #10 Aug 25 2013 06:04:24
%S A104837 89793238462643383,79323846264338327,33832795028841971,
%T A104837 79502884197169399,48086513282306647,46095505822317253,
%U A104837 81284811174502841,74881520920962829,52092096282925409
%N A104837 Primes from merging of 17 successive digits in decimal expansion of Pi.
%H A104837 Vincenzo Librandi, <a href="/A104837/b104837.txt">Table of n, a(n) for n = 1..1000</a>
%t A104837 With[{pi = FromDigits/@Partition[RealDigits[Pi, 10, 800][[1]], 17, 1]}, Select[pi, PrimeQ]] (* _Vincenzo Librandi_, Apr 21 2013 *)
%Y A104837 Cf. A000796, A104819 - A104842.
%K A104837 nonn,base
%O A104837 1,1
%A A104837 _Zak Seidov_, Mar 27 2005