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 A020841 #16 Jan 19 2025 14:30:35 %S A020841 1,0,9,1,0,8,9,4,5,1,1,7,9,9,6,1,9,0,6,3,3,0,4,8,7,4,2,7,0,7,8,0,9,7, %T A020841 2,5,9,2,8,2,0,1,3,4,7,0,6,5,9,0,4,0,9,2,9,1,9,2,2,0,0,5,0,5,6,9,2,1, %U A020841 1,1,5,2,9,8,9,2,3,2,6,4,0,1,5,7,2,4,6,7,0,3,7,9,7,4,6,2,9,7,6 %N A020841 Decimal expansion of 1/sqrt(84). %H A020841 Ivan Panchenko, <a href="/A020841/b020841.txt">Table of n, a(n) for n = 0..1000</a> %F A020841 Equals 1/(2*A010477). - _Stefano Spezia_, Jan 19 2025 %t A020841 RealDigits[1/Sqrt[84],10,120][[1]] (* _Harvey P. Dale_, Nov 27 2013 *) %Y A020841 Cf. A010477. %K A020841 nonn,cons,easy %O A020841 0,3 %A A020841 _N. J. A. Sloane_