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 A019657 #17 Sep 08 2022 08:44:44 %S A019657 2,2,4,7,9,0,9,5,1,1,7,8,6,3,6,7,5,8,8,1,0,8,9,4,0,8,2,7,7,7,5,1,4,0, %T A019657 2,4,2,6,1,3,7,7,5,0,4,0,4,9,7,3,5,9,1,2,2,3,2,1,3,3,8,4,7,0,3,6,3,0, %U A019657 4,3,2,0,9,5,0,9,9,6,6,8,3,4,1,8,7,6,5,8,8,9,8,2,8,2,3,5,3,0,1 %N A019657 Decimal expansion of sqrt(Pi*e)/13. %H A019657 Ivan Panchenko, <a href="/A019657/b019657.txt">Table of n, a(n) for n = 0..1000</a> %t A019657 RealDigits[Sqrt[Pi*E]/13, 10, 20][[1]] (* _G. C. Greubel_, Jan 10 2017 *) %o A019657 (PARI) sqrt(Pi*exp (1))/13 \\ _G. C. Greubel_, Jan 10 2017 %o A019657 (Magma) C<i> := ComplexField(); [Sqrt(Pi(C)*Exp(1))/13]; // _G. C. Greubel_, Nov 06 2017 %Y A019657 Cf. A019645. %K A019657 nonn,cons %O A019657 0,1 %A A019657 _N. J. A. Sloane_