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 A020840 #11 Jul 08 2025 07:55:01 %S A020840 1,0,9,7,6,4,2,5,9,9,8,9,6,9,0,3,4,7,9,7,5,2,4,8,5,0,7,2,8,5,4,0,5,6, %T A020840 5,2,8,9,2,7,6,0,7,1,2,8,7,0,6,6,2,1,1,8,7,0,4,7,8,2,3,9,1,1,4,5,3,7, %U A020840 3,7,4,9,3,2,8,7,1,5,7,3,0,9,1,0,6,6,6,7,6,4,5,8,9,5,0,8,1,5,9 %N A020840 Decimal expansion of 1/sqrt(83). %H A020840 Ivan Panchenko, <a href="/A020840/b020840.txt">Table of n, a(n) for n = 0..1000</a> %t A020840 RealDigits[1/Sqrt[83],10,120][[1]] (* _Harvey P. Dale_, Sep 07 2013 *) %K A020840 nonn,cons %O A020840 0,3 %A A020840 _N. J. A. Sloane_