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 A198882 #10 Feb 07 2025 17:45:12
%S A198882 1,4,6,7,7,5,1,3,6,0,2,0,4,1,4,6,5,4,1,5,6,0,5,8,4,6,1,8,8,5,6,9,2,6,
%T A198882 3,1,6,3,3,7,3,6,3,4,3,8,9,5,1,4,7,9,7,0,8,5,3,6,6,8,1,1,7,8,4,1,7,9,
%U A198882 7,5,6,1,9,4,5,8,8,1,3,0,3,3,1,0,6,6,0,7,3,8,6,8,5,8,2,9,6,2,5
%N A198882 Decimal expansion of x>0 satisfying 2*x^2-3*cos(x)=4.
%C A198882 See A198755 for a guide to related sequences. The Mathematica program includes a graph.
%H A198882 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A198882 1.4677513602041465415605846188569263163373634389...
%t A198882 a = 2; b = -3; c = 4;
%t A198882 f[x_] := a*x^2 + b*Cos[x]; g[x_] := c
%t A198882 Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
%t A198882 r = x /. FindRoot[f[x] == g[x], {x, 1.46, 1.47}, WorkingPrecision -> 110]
%t A198882 RealDigits[r] (* A198882 *)
%Y A198882 Cf. A198755.
%K A198882 nonn,cons
%O A198882 1,2
%A A198882 _Clark Kimberling_, Oct 31 2011