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 A104835 #12 Aug 25 2013 05:28:04
%S A104835 841971693993751,384460955058223,596446229489549,19091456485669,
%T A104835 456485669234603,610454326648213,104543266482133,488204665213841,
%U A104835 305727036575959,270365759591953,185480744623799,227938183011949
%N A104835 Primes from merging of 15 successive digits in decimal expansion of Pi.
%H A104835 Vincenzo Librandi, <a href="/A104835/b104835.txt">Table of n, a(n) for n = 1..1000</a>
%t A104835 With[{pi = FromDigits/@Partition[RealDigits[Pi, 10, 700][[1]], 15, 1]}, Select[pi, PrimeQ]] (* _Vincenzo Librandi_, Apr 21 2013 *)
%Y A104835 Cf. A000796, A104819 - A104842.
%K A104835 nonn,base
%O A104835 1,1
%A A104835 _Zak Seidov_, Mar 27 2005