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 A019809 #17 Sep 08 2022 08:44:44 %S A019809 1,0,1,3,7,5,8,2,5,2,8,6,8,3,1,4,8,7,1,0,2,7,6,2,4,3,7,4,8,5,5,8,2,6, %T A019809 4,6,7,9,9,1,4,0,7,0,8,6,6,0,3,2,9,9,3,1,4,3,5,1,3,4,6,2,8,1,6,4,1,7, %U A019809 4,3,4,9,9,7,4,4,6,3,3,6,3,0,2,1,8,5,3,4,7,7,9,0,4,1,5,1,2,0,6 %N A019809 Decimal expansion of sqrt(2*e)/23. %H A019809 Ivan Panchenko, <a href="/A019809/b019809.txt">Table of n, a(n) for n = 0..1000</a> %e A019809 0.10137582528683148710276243748558264679914070866032993... %t A019809 RealDigits[Sqrt[2*E]/23, 10, 100][[1]] (* _G. C. Greubel_, Sep 08 2018 *) %o A019809 (PARI) default(realprecision, 100); sqrt(2*exp(1))/23 \\ _G. C. Greubel_, Sep 08 2018 %o A019809 (Magma) SetDefaultRealField(RealField(100)); R:= RealField(); Sqrt(2*Exp(1))/23; // _G. C. Greubel_, Sep 08 2018 %Y A019809 Cf. A019798 (sqrt(2*e)). %K A019809 nonn,cons %O A019809 0,4 %A A019809 _N. J. A. Sloane_