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 A191502 #11 Feb 16 2025 08:33:14 %S A191502 1,9,1,8,7,2,4,6,6,5,9,7,7,6,3,4,5,2,9,6,6,0,3,7,8,2,5,0,7,4,9,8,1,5, %T A191502 7,5,3,0,1,6,9,1,8,3,1,2,6,6,3,0,7,2,5,4,9,5,6,4,0,5,7,7,3,9,9,8,3,8, %U A191502 1,0,1,8,1,1,4,5,0,1,1,6,9,9,3,7,1,3,1,5,6,7,0,6,6,7,3,3,6,7,4,7,3,4,1,6,8,6,2,4,8,7,1,1,6,3,7,7,5,2,1,4 %N A191502 AGM(1,Pi). %C A191502 AGM is the arithmetic-geometric mean. %H A191502 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Arithmetic-GeometricMean.html">Arithmetic-Geometric Mean</a> %e A191502 1.918724665977634529660378250749815... %t A191502 RealDigits[ ArithmeticGeometricMean[1, Pi], 10, 120] // First (* _Jean-François Alcover_, Mar 07 2013 *) %o A191502 (PARI) agm(1,Pi) %Y A191502 Cf. A191220 %K A191502 nonn,cons %O A191502 1,2 %A A191502 _Franklin T. Adams-Watters_, Jun 03 2011