login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A163960 Decimal expansion of 2*(sqrt(2) - 1). 3
8, 2, 8, 4, 2, 7, 1, 2, 4, 7, 4, 6, 1, 9, 0, 0, 9, 7, 6, 0, 3, 3, 7, 7, 4, 4, 8, 4, 1, 9, 3, 9, 6, 1, 5, 7, 1, 3, 9, 3, 4, 3, 7, 5, 0, 7, 5, 3, 8, 9, 6, 1, 4, 6, 3, 5, 3, 3, 5, 9, 4, 7, 5, 9, 8, 1, 4, 6, 4, 9, 5, 6, 9, 2, 4, 2, 1, 4, 0, 7, 7, 7, 0, 0, 7, 7, 5, 0, 6, 8, 6, 5, 5, 2, 8, 3, 1, 4, 5 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Decimal expansion of shortest length, (B), of segment from side BC through incenter to side BA in right triangle ABC with sidelengths (a,b,c)=(1,1,sqrt(2)). (See A195284.) - Clark Kimberling, Sep 14 2011

REFERENCES

J. M. Steele, Probability Theory and Combinatorial Optimization, SIAM 1997, p. 3.

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..5000

EXAMPLE

0.82842712474619009760337744841939615713934375075389614635335...

MATHEMATICA

RealDigits[2(Sqrt[2]-1), 10, 120][[1]] (* Harvey P. Dale, May 27 2016 *)

PROG

(PARI) 2*(sqrt(2)-1) \\ G. C. Greubel, Aug 13 2017

CROSSREFS

Cf. A010466, A086178, A156035, A157258.

Sequence in context: A143025 A303326 A085967 * A246849 A143531 A211269

Adjacent sequences:  A163957 A163958 A163959 * A163961 A163962 A163963

KEYWORD

nonn,cons

AUTHOR

N. J. A. Sloane, Oct 02 2010

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 September 18 18:29 EDT 2019. Contains 327180 sequences. (Running on oeis4.)