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 A185591 #16 Jul 08 2017 12:44:10 %S A185591 3,7,2,3,2,2,2,2,2,2,3,13,2,2,2,3,5,7,2,3,7,2,3,2,5,2,2,3,2,2,2,2,2,3, %T A185591 2,2,5,2,2,5,2,2,2,2,7,3,3,7,2,7,2,3,19,2,3,7,3,3,3,2,2,2,13,2,3,3,3, %U A185591 2,5,3,2,2,3,23,3,7,2,2,2,127,5,3,13,7,5,3,29,3,2,2,3,3,3,3,2,7,2,11,3,7,5,2,3,2,3,2,2,2 %N A185591 Primes in continued fraction expansion of Pi (A001203). %H A185591 G. C. Greubel, <a href="/A185591/b185591.txt">Table of n, a(n) for n = 1..5000</a> %p A185591 Digits := 600: p1 := convert(Pi,confrac,300): select(isprime, p1); %t A185591 Select[ContinuedFraction[Pi,500],PrimeQ] (* _Harvey P. Dale_, Jan 22 2012 *) %Y A185591 Cf. A185809. %K A185591 nonn %O A185591 1,1 %A A185591 _Jani Melik_, Feb 04 2011