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 A198756 #8 Feb 07 2025 16:44:05
%S A198756 1,7,9,5,1,1,6,6,4,1,8,2,0,3,9,9,7,1,5,6,3,9,9,3,0,2,7,6,4,4,6,7,9,4,
%T A198756 8,8,4,6,2,2,0,5,0,5,7,7,9,6,6,8,9,8,0,8,1,3,4,5,5,3,2,0,0,6,4,1,2,2,
%U A198756 8,2,7,0,6,5,7,0,5,2,3,9,3,8,4,8,7,6,1,5,6,7,0,2,4,5,6,0,4,9,2
%N A198756 Decimal expansion of x>0 satisfying x^2+cos(x)=3.
%C A198756 See A198755 for a guide to related sequences. The Mathematica program includes a graph.
%H A198756 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A198756 1.7951166418203997156399302764467948846220...
%t A198756 a = 1; b = 1; c = 3;
%t A198756 f[x_] := a*x^2 + b*Cos[x]; g[x_] := c
%t A198756 Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
%t A198756 r = x /. FindRoot[f[x] == g[x], {x, 1.79, 1.80}, WorkingPrecision -> 110]
%t A198756 RealDigits[r] (* A198756 *)
%Y A198756 Cf. A198755.
%K A198756 nonn,cons
%O A198756 1,2
%A A198756 _Clark Kimberling_, Oct 30 2011