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 A104833 #8 Apr 23 2013 03:02:35
%S A104833 9265358979323,8253421170679,5940812848111,6648213393607,
%T A104833 1748815209209,1520920962829,6282925409171,5213841469519,
%U A104833 5194151160943,4330572703657,7595919530921,9530921861173,921861173819,1738193261179,8548074462379
%N A104833 Primes from merging of 13 successive digits in decimal expansion of Pi.
%H A104833 Vincenzo Librandi, <a href="/A104833/b104833.txt">Table of n, a(n) for n = 1..1000</a>
%t A104833 With[{pi = FromDigits/@Partition[RealDigits[Pi, 10, 600][[1]], 13, 1]}, Select[pi, PrimeQ]] (* _Vincenzo Librandi_, Apr 21 2013 *)
%Y A104833 Cf. A104819 - A104842.
%K A104833 nonn,base
%O A104833 1,1
%A A104833 _Zak Seidov_, Mar 27 2005