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A200410 Decimal expansion of least x>0 satisfying 4*x^2+1=tan(x). 2
1, 4, 6, 7, 1, 0, 7, 0, 6, 7, 9, 4, 7, 8, 9, 4, 0, 0, 2, 3, 4, 3, 2, 4, 8, 3, 6, 3, 2, 3, 9, 3, 6, 5, 8, 0, 8, 2, 6, 6, 0, 9, 4, 3, 7, 9, 9, 7, 6, 0, 2, 3, 2, 3, 4, 2, 5, 2, 4, 8, 0, 9, 9, 2, 0, 7, 4, 3, 8, 3, 7, 5, 3, 0, 8, 5, 7, 7, 5, 7, 1, 5, 9, 5, 6, 5, 4, 2, 7, 7, 4, 9, 6, 7, 6, 5, 7, 5, 3 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See A200338 for a guide to related sequences.  The Mathematica program includes a graph.

LINKS

Table of n, a(n) for n=1..99.

EXAMPLE

x=1.4671070679478940023432483632393658082660943799...

MATHEMATICA

a = 4; b = 0; c = 1;

f[x_] := a*x^2 + b*x + c; g[x_] := Tan[x]

Plot[{f[x], g[x]}, {x, -.1, Pi/2}, {AxesOrigin -> {0, 0}}]

r = x /. FindRoot[f[x] == g[x], {x, 1.4, 1.5}, WorkingPrecision -> 110]

RealDigits[r]   (* A200410 *)

CROSSREFS

Cf. A200338.

Sequence in context: A042976 A090142 A086237 * A136323 A135798 A197010

Adjacent sequences:  A200407 A200408 A200409 * A200411 A200412 A200413

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Nov 17 2011

STATUS

approved

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Last modified May 25 15:19 EDT 2019. Contains 323570 sequences. (Running on oeis4.)