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 A198619 #8 Apr 23 2025 12:50:32
%S A198619 3,5,4,1,0,0,5,7,7,3,1,0,0,7,7,1,7,0,2,1,0,9,0,2,2,6,2,6,0,6,3,1,5,4,
%T A198619 5,2,9,4,5,9,6,5,9,4,4,9,5,0,0,0,6,7,0,3,3,5,0,1,5,3,9,7,6,6,0,2,5,0,
%U A198619 5,3,2,8,8,6,6,9,4,7,2,6,3,0,1,5,6,6,3,7,7,1,3,6,1,8,8,4,5,9,0
%N A198619 Decimal expansion of x<0 satisfying 3*x^2+4x=3*sin(x).
%C A198619 See A198414 for a guide to related sequences. The Mathematica program includes a graph.
%H A198619 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A198619 -0.3541005773100771702109022626063154529459659...
%t A198619 a = 3; b = 4; c = 3;
%t A198619 f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]
%t A198619 Plot[{f[x], g[x]}, {x, -.5, .1}]
%t A198619 r = x /.
%t A198619 FindRoot[f[x] == g[x], {x, -.36, -.35}, WorkingPrecision -> 110]
%t A198619 RealDigits[r] (* A198619 *)
%Y A198619 Cf. A198414.
%K A198619 nonn,cons
%O A198619 0,1
%A A198619 _Clark Kimberling_, Oct 28 2011