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 A341942 #25 Oct 01 2022 15:44:26
%S A341942 2,6,3,9,0,9,6,0,4,1,7,8,6,6,4,8,3,2,0,5,3,0,8,8,8,9,7,5,5,8,2,5,3,7,
%T A341942 1,9,1,5,0,9,2,0,6,7,4,8,6,2,2,9,7,4,8,4,9,0,7,9,8,2,3,3,1,5,3,3,4,0,
%U A341942 0,2,6,9,6,2,9,3,8,1,9,6,9,4,3,8,0,6,7,7,6,1,6,3,0,7,4,1,0,0,2,0,2,1,2,0,2
%N A341942 Decimal expansion of (388 + 15*Pi)/(212 - 15*Pi).
%C A341942 The constant is equal to lim_{n -> oo} A190020(n)/A190019(n), which is the ratio of the probability of an obtuse triangle to an acute triangle, when all three vertices are drawn uniformly at random in a square.
%H A341942 Code Golf Stack Exchange, <a href="https://math.stackexchange.com/q/3936716/121988">Ratio of obtuse triangles to acute triangles in the square.</a>
%H A341942 Eric Langford, <a href="https://doi.org/10.1093/biomet/56.3.689">The probability that a random triangle is obtuse</a>, Biometrika, 56(3), 1969, p. 689.
%H A341942 <a href="https://oeis.org/plot2a?name1=A190020&name2=A190019&tform1=untransformed&tform2=untransformed&shift=0&radiop1=ratio&drawpoints=true&drawlines=true">Plot of A190020(n)/A190019(n) vs n using OEIS Plot2</a>.
%H A341942 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%e A341942 2.6390960417866483205308889755825371915092...
%t A341942 RealDigits[(388 + 15*Pi)/(212 - 15*Pi), 10, 100][[1]]
%o A341942 (PARI) (388 + 15*Pi)/(212 - 15*Pi) \\ _Michel Marcus_, Feb 25 2021
%Y A341942 Cf. A000796, A190019, A190020.
%K A341942 nonn,cons
%O A341942 1,1
%A A341942 _Peter Kagey_, Feb 24 2021