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 A020804 #22 Mar 18 2018 14:57:14 %S A020804 1,4,5,8,6,4,9,9,1,4,9,7,8,9,4,5,5,5,8,4,9,6,9,9,3,9,2,5,3,3,7,2,0,1, %T A020804 9,0,6,4,8,0,9,8,7,9,7,0,4,2,5,8,1,4,1,0,1,1,6,7,0,4,4,2,9,4,8,2,5,2, %U A020804 1,6,4,0,7,4,7,5,9,1,8,5,1,0,4,7,3,8,9,8,9,6,7,7,6,5,9,7,1,6,6 %N A020804 Decimal expansion of 1/sqrt(47). %H A020804 Ivan Panchenko, <a href="/A020804/b020804.txt">Table of n, a(n) for n = 0..1000</a> %e A020804 1/sqrt(47) = 0.14586499149789455584969939253372019064809879704258141... - _Vladimir Joseph Stephan Orlovsky_, Jun 01 2010 %t A020804 RealDigits[N[1/Sqrt[47], 200]][[1]] (* _Vladimir Joseph Stephan Orlovsky_, Jun 01 2010 *) %o A020804 (PARI) 1/sqrt(47) \\ _Altug Alkan_, Mar 18 2018 %K A020804 nonn,cons %O A020804 0,2 %A A020804 _N. J. A. Sloane_