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 A253214 #15 Feb 16 2025 08:33:24 %S A253214 3,1,4,1,5,9,2,6,5,3,5,8,9,7,9,3,0,1,6,4,9,5,8,8,8,6,5,3,1,9,6,7,2,3, %T A253214 7,4,6,4,0,6,8,2,4,8,8,1,4,3,8,4,4,3,9,3,9,5,8,3,7,7,3,5,6,1,9,3,6,2, %U A253214 8,7,0,8,6,3,8,6,2,1,8,2,6,1,6,9,8,6,0,4,9,3,7,9,0,6,7,2,3,4,9,9,5,5,6,2 %N A253214 Decimal expansion of log(640320^3)/sqrt(163), a Ramanujan constant producing 16 correct digits of Pi. %H A253214 Jonathan M. Borwein, <a href="http://www.cecm.sfu.ca/~jborwein/aesthetics.pdf">Aesthetics for the Working Mathematician</a> %H A253214 Eric Weisstein's MathWorld, <a href="https://mathworld.wolfram.com/RamanujanConstant.html">Ramanujan Constant</a> %H A253214 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %e A253214 3.141592653589793|0164958886531967237464..., where | shows the position from where the digits differ. %t A253214 RealDigits[Log[640320^3]/Sqrt[163], 10, 104] // First %o A253214 (PARI) log(640320^3)/sqrt(163) \\ _Charles R Greathouse IV_, Apr 20 2016 %Y A253214 Cf. A000796, A060295. %K A253214 nonn,cons,easy %O A253214 1,1 %A A253214 _Jean-François Alcover_, Dec 29 2014