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 A020809 #12 Jul 08 2025 07:52:27 %S A020809 1,3,8,6,7,5,0,4,9,0,5,6,3,0,7,2,8,0,5,0,4,5,8,5,4,3,3,3,6,4,2,4,9,8, %T A020809 4,4,0,8,6,5,8,8,3,2,9,7,6,3,2,7,8,7,0,0,4,8,8,8,6,3,5,7,9,0,8,5,6,6, %U A020809 0,2,6,7,2,4,2,0,3,8,8,6,3,2,7,7,1,0,0,7,3,3,9,2,3,7,8,8,1,0,4 %N A020809 Decimal expansion of 1/sqrt(52). %H A020809 Ivan Panchenko, <a href="/A020809/b020809.txt">Table of n, a(n) for n = 0..1000</a> %t A020809 RealDigits[N[1/Sqrt[52], 200]] (* _Vladimir Joseph Stephan Orlovsky_, Jun 12 2011 *) %Y A020809 Cf. A020808. %K A020809 nonn,cons,easy %O A020809 0,2 %A A020809 _N. J. A. Sloane_