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 A202244 #6 Feb 07 2025 16:44:07
%S A202244 6,2,4,6,9,7,1,6,8,3,2,3,1,6,2,2,3,6,2,5,5,6,3,7,1,6,0,6,3,0,5,0,4,0,
%T A202244 6,1,7,3,4,7,2,0,6,5,0,4,5,0,7,6,4,8,4,8,1,4,8,6,3,0,3,8,4,3,4,4,1,0,
%U A202244 6,1,9,8,6,5,5,3,1,1,4,9,1,5,0,2,6,6,2,8,8,5,4,1,4,3,2,6,9,5,9
%N A202244 Decimal expansion of x>0 satisfying x*sinh(2x)=1.
%C A202244 See A201939 for a guide to related sequences. The Mathematica program includes a graph.
%e A202244 x=0.62469716832316223625563716063050406173...
%t A202244 u = 2; v = 1;
%t A202244 f[x_] := x*Sinh[u*x]; g[x_] := v
%t A202244 Plot[{f[x], g[x]}, {x, 0, 1}, {AxesOrigin -> {0, 0}}]
%t A202244 r = x /. FindRoot[f[x] == g[x], {x, .6, .7}, WorkingPrecision -> 110]
%t A202244 RealDigits[r] (* A202244 *)
%Y A202244 Cf. A201946.
%K A202244 nonn,cons
%O A202244 0,1
%A A202244 _Clark Kimberling_, Dec 15 2011