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 A248584 #5 Oct 09 2014 18:58:28
%S A248584 3,1,8,2,4,8,1,6,5,0,8,3,6,9,0,1,2,4,7,7,7,6,8,5,5,8,9,9,9,6,7,8,7,8,
%T A248584 4,4,7,8,8,6,5,7,1,2,2,3,3,1,5,3,3,0,4,9,4,6,7,0,9,4,7,9,6,9,6,0,9,0,
%U A248584 4,3,2,9,3,5,8,3,3,3,5,0,4,6,3,7,7,9,5,0,0,6,1,9,8,8,2,5,6,0,1,7,3,9
%N A248584 Decimal expansion of the value of the continued fraction constructed from prime primorials plus 1.
%H A248584 Marek Wolf, <a href="http://arxiv.org/abs/1003.4015">"Continued fractions constructed from prime numbers"</a> arXiv:1003.4015 [math.NT] Sep 26 2010, p. 14.
%e A248584 0.318248165083690124777685589996787844788657122331533049467...
%t A248584 RealDigits[N[FromContinuedFraction[{0, 3, 7, 31, 211, 2311, 200560490131}], 102]] // First
%Y A248584 Cf. A005234, A006794, A018239, A057705, A242072, A247856, A247858, A247860, A248585.
%K A248584 nonn,cons
%O A248584 0,1
%A A248584 _Jean-François Alcover_, Oct 09 2014