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 A020818 #15 Jul 08 2025 07:53:15 %S A020818 1,2,8,0,3,6,8,7,9,9,3,2,8,9,5,9,7,3,6,7,4,2,5,7,7,4,9,7,6,6,5,4,2,6, %T A020818 4,6,1,2,4,0,7,0,5,7,6,0,1,0,6,3,2,1,8,5,2,4,8,8,0,7,2,7,4,7,5,7,2,2, %U A020818 5,9,9,3,2,6,1,2,5,7,8,2,0,5,6,4,3,5,1,3,6,1,5,1,2,5,7,3,8,5,0 %N A020818 Decimal expansion of 1/sqrt(61). %H A020818 Ivan Panchenko, <a href="/A020818/b020818.txt">Table of n, a(n) for n = 0..1000</a> %t A020818 RealDigits[N[1/Sqrt[61], 200]][[1]] (* _Vladimir Joseph Stephan Orlovsky_, Jun 12 2011 *) %K A020818 nonn,cons %O A020818 0,2 %A A020818 _N. J. A. Sloane_ %E A020818 Mathematica program fixed by _Harvey P. Dale_, May 08 2018