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 A135001 #13 Sep 08 2022 08:45:32 %S A135001 8,0,5,5,1,2,4,1,3,5,7,0,0,2,6,6,1,8,2,6,3,4,0,2,9,7,7,9,0,8,0,2,0,5, %T A135001 9,3,0,7,1,6,8,8,5,0,0,8,8,2,0,7,5,1,8,5,6,8,8,3,1,2,8,0,7,7,6,2,2,0, %U A135001 2,1,2,2,6,2,3,6,3,2,3,7,1,3,8,4,3,5,7,1,2,7,1,3,4,8,4,2,1,3,8,2 %N A135001 Decimal expansion of e+gamma+Pi+phi, where gamma is the Euler-Mascheroni constant and phi is the golden ratio. %H A135001 G. C. Greubel, <a href="/A135001/b135001.txt">Table of n, a(n) for n = 1..2000</a> %e A135001 ............ e = 2.718281828459045235... %e A135001 ........ gamma = 0.577215664901532860... %e A135001 ........... Pi = 3.141592635589793238... %e A135001 .......... phi = 1.618033988749894848... %e A135001 e+gamma+Pi+phi = 8.055124135700266182... %t A135001 RealDigits[E + EulerGamma + Pi + GoldenRatio, 10, 50][[1]] (* or *) N[E + EulerGamma + Pi + GoldenRatio, 25] (* _G. C. Greubel_, Sep 16 2016 *) %o A135001 (PARI) default(realprecision, 200); exp(1) + Euler + Pi + (1+sqrt(5))/2\\ _G. C. Greubel_, Aug 29 2018 %o A135001 (Magma) SetDefaultRealField(RealField(100)); R:= RealField(); Exp(1) + EulerGamma(R) + Pi(R) + (1+Sqrt(5))/2; // _G. C. Greubel_, Aug 29 2018 %Y A135001 Cf. A001113 (e), A001620 (gamma), A000796 (Pi), A001622 (phi), A133055 (e+Pi+phi). %K A135001 cons,nonn %O A135001 1,1 %A A135001 _Omar E. Pol_, Nov 21 2007