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 A202243 #7 Feb 07 2025 16:44:07
%S A202243 1,4,6,4,8,7,7,3,3,4,3,6,3,4,5,4,1,2,5,7,8,9,2,9,0,0,0,3,7,5,5,1,0,6,
%T A202243 3,7,7,6,2,9,4,9,4,9,3,8,1,6,9,4,9,0,1,0,6,0,4,9,2,4,5,6,5,7,0,1,3,3,
%U A202243 8,5,3,6,5,9,9,6,5,3,8,4,3,1,0,3,8,5,6,8,4,1,2,7,1,5,3,3,4,9,2
%N A202243 Decimal expansion of x>0 satisfying x*sinh(x)=3.
%C A202243 See A201939 for a guide to related sequences. The Mathematica program includes a graph.
%e A202243 x=1.46487733436345412578929000375510637762949493...
%t A202243 u = 1; v = 3;
%t A202243 f[x_] := x*Sinh[u*x]; g[x_] := v
%t A202243 Plot[{f[x], g[x]}, {x, 0, 2}, {AxesOrigin -> {0, 0}}]
%t A202243 r = x /. FindRoot[f[x] == g[x], {x, 1.4, 1.5}, WorkingPrecision -> 110]
%t A202243 RealDigits[r] (* A202243 *)
%Y A202243 Cf. A201946.
%K A202243 nonn,cons
%O A202243 1,2
%A A202243 _Clark Kimberling_, Dec 15 2011