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 A019804 #15 Sep 08 2022 08:44:44 %S A019804 1,7,9,3,5,7,2,2,9,3,5,3,6,2,4,9,3,8,7,2,0,2,7,2,0,0,4,7,8,2,1,8,4,6, %T A019804 8,2,7,9,8,4,7,9,7,1,5,3,2,2,1,2,2,1,8,6,3,8,5,2,3,8,1,8,8,2,9,0,4,6, %U A019804 2,3,1,1,4,9,3,2,8,1,3,3,4,5,7,7,1,2,5,3,8,3,9,8,4,2,6,7,5,1,9 %N A019804 Decimal expansion of sqrt(2*e)/13. %H A019804 Ivan Panchenko, <a href="/A019804/b019804.txt">Table of n, a(n) for n = 0..1000</a> %e A019804 0.17935722935362493872027200478218468279847971532212218638523818829... %t A019804 RealDigits[Sqrt[2E]/13,10,120][[1]] (* _Harvey P. Dale_, Nov 29 2015 *) %o A019804 (PARI) default(realprecision, 100); sqrt(2*exp(1))/13 \\ _G. C. Greubel_, Sep 08 2018 %o A019804 (Magma) SetDefaultRealField(RealField(100)); R:= RealField(); Sqrt(2*Exp(1))/13; // _G. C. Greubel_, Sep 08 2018 %Y A019804 Cf. A019798 (sqrt(2*e)). %K A019804 nonn,cons %O A019804 0,2 %A A019804 _N. J. A. Sloane_