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 A019805 #18 Sep 08 2022 08:44:44 %S A019805 1,5,5,4,4,2,9,3,2,1,0,6,4,7,4,9,4,6,8,9,0,9,0,2,4,0,4,1,4,4,5,6,0,0, %T A019805 5,8,4,2,5,3,4,9,0,8,6,6,1,2,5,0,5,8,9,4,8,6,7,2,0,6,4,2,9,8,5,1,7,3, %U A019805 4,0,0,3,2,9,4,1,7,7,1,5,6,6,3,3,5,0,8,6,6,6,1,1,9,6,9,8,5,1,6 %N A019805 Decimal expansion of sqrt(2*e)/15. %H A019805 Ivan Panchenko, <a href="/A019805/b019805.txt">Table of n, a(n) for n = 0..1000</a> %e A019805 0.1554429321064749468909024041445600584253490866125058948672... %t A019805 RealDigits[Sqrt[2*E]/15,10,120][[1]] (* _Harvey P. Dale_, Dec 10 2015 *) %o A019805 (PARI) default(realprecision, 100); sqrt(2*exp(1))/15 \\ _G. C. Greubel_, Sep 08 2018 %o A019805 (Magma) SetDefaultRealField(RealField(100)); R:= RealField(); Sqrt(2*Exp(1))/15; // _G. C. Greubel_, Sep 08 2018 %Y A019805 Cf. A019798 (sqrt(2*e)). %K A019805 nonn,cons %O A019805 0,2 %A A019805 _N. J. A. Sloane_