login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A201299 Decimal expansion of x satisfying x^2 - 5 = cot(x) and 0 < x < Pi. 2
2, 1, 0, 0, 9, 2, 9, 3, 7, 7, 0, 2, 7, 2, 8, 5, 9, 4, 0, 8, 0, 0, 3, 7, 3, 7, 5, 5, 6, 7, 9, 3, 5, 5, 5, 9, 3, 6, 3, 8, 9, 4, 5, 2, 6, 3, 7, 8, 9, 2, 3, 2, 7, 2, 8, 1, 6, 4, 9, 2, 6, 2, 0, 0, 3, 1, 1, 9, 1, 5, 1, 7, 9, 5, 7, 4, 0, 9, 6, 4, 5, 6, 9, 1, 6, 5, 2, 2, 7, 4, 1, 0, 0, 1, 3, 7, 9, 9, 5, 7, 5, 7, 7 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

See A201280 for a guide to related sequences. The Mathematica program includes a graph.

LINKS

Table of n, a(n) for n=1..103.

EXAMPLE

2.10092937702728594080037375567935559363...

MATHEMATICA

a = 1; c = -5;

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

Plot[{f[x], g[x]}, {x, 0, Pi}, {AxesOrigin -> {0, 0}}]

r = x /. FindRoot[f[x] == g[x], {x, 2.0, 2.1}, WorkingPrecision -> 110]

RealDigits[r]   (* A201299 *)

CROSSREFS

Cf. A201280.

Sequence in context: A057275 A057271 A021480 * A057274 A088632 A057272

Adjacent sequences:  A201296 A201297 A201298 * A201300 A201301 A201302

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Nov 29 2011

EXTENSIONS

a(94) onwards corrected by Georg Fischer, Aug 03 2021

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 18 00:36 EST 2022. Contains 350410 sequences. (Running on oeis4.)