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 A211015 #20 Sep 08 2022 08:46:01 %S A211015 1,0,0,0,5,2,6,4,9,0,0,3,2,2,8,0,8,6,3,7,0,8,8,6,8,0,0,2,0,0,9,2,4,2, %T A211015 8,1,7,4,8,2,0,8,1,6,4,1,6,1,5,0,6,9,8,4,4,8,1,3,7,4,4,1,9,9,4,6,8,6, %U A211015 0,7,5,0,2,7,1,0,3,2,6,0,7,4,9,9,3,5,9,9,7,1,0,1,0,8,6,9,7,3,9,0,0,6,9,3,1 %N A211015 Decimal expansion of Pi - e + gamma, where gamma is Euler's constant (or the Euler-Mascheroni constant). %C A211015 An approximation to 1. %H A211015 G. C. Greubel, <a href="/A211015/b211015.txt">Table of n, a(n) for n = 1..10000</a> %F A211015 Equals A000796 - A001113 + A001620 = A073244 + A001620. %e A211015 1.00052649003228086370886800200... %p A211015 evalf(Pi-exp(1)+gamma, 120); # _Alois P. Heinz_, Jul 10 2022 %t A211015 RealDigits[Pi - E + EulerGamma, 10, 105][[1]] (* _T. D. Noe_, Sep 20 2012 *) %o A211015 (PARI) default(realprecision, 100); Pi - exp(1) + Euler \\ _G. C. Greubel_, Sep 06 2018 %o A211015 (Magma) SetDefaultRealField(RealField(100)); R:= RealField(); Pi(R) - Exp(1) + EulerGamma(R); // _G. C. Greubel_, Sep 06 2018 %Y A211015 Cf. A000796, A001113, A001620, A073244, A203816. %K A211015 nonn,cons %O A211015 1,5 %A A211015 _Omar E. Pol_, Sep 16 2012 %E A211015 Extended by _T. D. Noe_, Sep 20 2012