login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A196503 Decimal expansion of greatest x satisfying cos(x)=1/sqrt(1+x^2). 5
2, 0, 3, 5, 3, 4, 1, 4, 9, 0, 7, 6, 5, 6, 4, 4, 3, 9, 6, 9, 7, 5, 7, 4, 2, 2, 2, 3, 9, 7, 3, 9, 5, 2, 9, 0, 2, 8, 9, 9, 9, 6, 9, 4, 1, 3, 1, 7, 8, 0, 3, 3, 8, 0, 9, 8, 1, 7, 6, 3, 5, 9, 4, 1, 3, 1, 0, 1, 4, 6, 0, 9, 4, 3, 1, 2, 7, 3, 6, 8, 5, 8, 3, 7, 8, 4, 9, 4, 3, 1, 4, 3, 2, 4, 1, 7, 7, 1, 1, 2 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

See A196502 and A196500 for related inequalities.

LINKS

Table of n, a(n) for n=0..99.

EXAMPLE

x=0.203534149076564439697574222397395290289996941...

MATHEMATICA

Plot[{Cos[x], 1/Sqrt[1 + x^2]}, {x, 0, 8}]

t = x /.FindRoot[1/Sqrt[1 + x^2] == Cos[x], {x, 4, 5}, WorkingPrecision -> 100]

RealDigits[t]   (* A196502 *)

1/t

RealDigits[1/t] (* A196503 *)

CROSSREFS

Cf. A196500, A196502, A196504.

Sequence in context: A215482 A161481 A272695 * A061151 A249774 A213407

Adjacent sequences:  A196500 A196501 A196502 * A196504 A196505 A196506

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Oct 03 2011

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 April 14 12:11 EDT 2021. Contains 342949 sequences. (Running on oeis4.)