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 A180658 #4 Oct 12 2013 15:27:02 %S A180658 2,4,7,1,0,1,2,8,5,9,6,9,7,9,0,9,7,4,8,5,9,5,7,8,6,2,3,9,8,8,6,8,6,2, %T A180658 0,6,1,4,8,7,7,7,0,2,0,0,3,3,8,8,7,5,4,4,3,7,5,1,8,8,2,6,1,5,9,8,0,8, %U A180658 7,3,5,9,8,1,2,7,9,7,6,7,5,3,8,2,8,6,6,2,7,1,7,0,1,1,2,3,1,7,7,7,7,0,0,0,8 %N A180658 Decimal expansion of the value of the continued fraction 2+2^2/(2^3+2^4/(2^5+2^6... %e A180658 2.4710128596979097485957862398868620614877702... [From _R. J. Mathar_, Sep 19 2010] %K A180658 cons,nonn %O A180658 1,1 %A A180658 _Jonathan D. B. Hodgson_, Sep 15 2010 %E A180658 More digits from _R. J. Mathar_, Sep 19 2010