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 A019651 #19 Sep 08 2022 08:44:44 %S A019651 4,1,7,4,6,8,9,0,9,3,3,1,7,5,3,9,8,0,6,4,8,8,0,3,2,9,6,5,8,6,8,1,1,7, %T A019651 5,9,3,4,2,5,5,8,2,2,1,8,0,6,6,5,2,4,0,8,4,3,1,1,0,5,7,1,5,9,2,4,5,6, %U A019651 5,1,6,7,4,8,0,4,2,2,4,1,2,0,6,3,4,2,2,3,6,6,8,2,3,8,6,5,5,6,0 %N A019651 Decimal expansion of sqrt(Pi*e)/7. %H A019651 Ivan Panchenko, <a href="/A019651/b019651.txt">Table of n, a(n) for n = 0..1000</a> %e A019651 0.4174689093317539806488032965868117593425582218... %t A019651 RealDigits[Sqrt[Pi*E]/7, 10, 20][[1]] (* _G. C. Greubel_, Jan 10 2017 *) %o A019651 (PARI) sqrt(Pi*exp (1))/7 \\ _G. C. Greubel_, Jan 10 2017 %o A019651 (Magma) C<i> := ComplexField(); [Sqrt(Pi(C)*Exp(1))/7]; // _G. C. Greubel_, Nov 17 2017 %Y A019651 Cf. A019645. %K A019651 nonn,cons %O A019651 0,1 %A A019651 _N. J. A. Sloane_