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 A200619 #12 Jan 30 2025 15:43:57
%S A200619 1,4,5,0,1,4,9,5,5,1,5,6,1,7,6,7,7,4,0,8,6,2,2,1,6,8,3,0,9,0,9,2,2,0,
%T A200619 1,3,5,2,4,3,6,4,2,6,2,5,8,8,4,3,7,3,6,0,4,2,0,3,1,0,5,7,9,5,4,0,8,6,
%U A200619 8,1,5,2,0,3,9,9,4,3,4,1,8,7,2,2,5,9,1,2,8,2,6,7,0,7,2,4,2,6,2
%N A200619 Decimal expansion of x satisfying 3*x^2 + 2 = sec(x) and 0 < x < Pi.
%C A200619 See A201397 for a guide to related sequences. The Mathematica program includes a graph.
%H A200619 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A200619 1.450149551561767740862216830909220135243...
%t A200619 a = 3; c = 2;
%t A200619 f[x_] := a*x^2 + c; g[x_] := Sec[x]
%t A200619 Plot[{f[x], g[x]}, {x, 0, Pi/2}, {AxesOrigin -> {0, 0}}]
%t A200619 r = x /. FindRoot[f[x] == g[x], {x, 1.4, 1.5}, WorkingPrecision -> 110]
%t A200619 RealDigits[r] (* A200619 *)
%Y A200619 Cf. A201397.
%K A200619 nonn,cons
%O A200619 1,2
%A A200619 _Clark Kimberling_, Dec 02 2011