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 A110894 #20 Dec 01 2023 15:48:57 %S A110894 9,5,4,4,9,9,7,3,6,1,0,3,6,4,1,5,8,5,5,9,9,4,3,4,7,2,5,6,6,6,9,3,3,1, %T A110894 2,5,0,5,6,4,4,7,5,5,2,5,9,6,6,4,3,1,3,2,0,3,2,6,6,7,9,9,9,7,3,9,0,4, %U A110894 7,4,1,9,2,9,4 %N A110894 Decimal expansion of error function of square root of 2. %H A110894 G. C. Greubel, <a href="/A110894/b110894.txt">Table of n, a(n) for n = 0..5000</a> %H A110894 Wikipedia, <a href="http://en.wikipedia.org/wiki/68-95-99.7_rule">68-95-99.7 rule</a> %H A110894 Wikipedia, <a href="http://en.wikipedia.org/wiki/Normal_distribution">Normal distribution</a> %H A110894 Wikipedia, <a href="https://en.wikipedia.org/wiki/Standard_deviation">Standard deviation</a> %F A110894 Equals erf(sqrt(2)). %e A110894 0.9544997... %p A110894 erf(sqrt(2.0)) ; # _R. J. Mathar_, Mar 07 2016 %t A110894 RealDigits[Erf[Sqrt[2]], 10, 50][[1]] (* _G. C. Greubel_, Oct 19 2017 *) %Y A110894 Cf. A178647 (1sigma), A270712 (3sigma). %K A110894 easy,nonn,cons %O A110894 0,1 %A A110894 _Joost de Winter_, Sep 20 2005