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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A213054 Decimal expansion of first Chandrasekhar's nearest neighbor constant. 1
5, 5, 3, 9, 6, 0, 2, 7, 8, 3, 6, 5, 0, 9, 0, 2, 0, 4, 7, 0, 1, 1, 2, 1, 1, 9, 1, 4, 9, 9, 7, 1, 4, 4, 4, 8, 6, 0, 7, 8, 7, 0, 0, 9, 5, 4, 3, 5, 2, 7, 7, 7, 9, 4, 6, 1, 0, 9, 6, 3, 0, 9, 4, 6, 0, 2, 5, 7, 1, 4, 4, 9, 5, 8, 1, 5, 9, 5, 7, 8, 5, 5, 0, 7, 0, 0, 3, 8, 7, 2, 6, 4, 6, 0, 6, 2, 0, 4, 3, 2, 3, 2, 4, 7, 5 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

When n pointlike particles are distributed uniformly randomly in a unit volume, the mean distance between any of them and its nearest neighbor is c/n^(1/3).

For the most probable distance, see A213055.

REFERENCES

S. Chandrasekhar, Stochastic Problems in Physics and Astronomy, Reviews of Modern Physics, 15 (1943), 1-89.

LINKS

Table of n, a(n) for n=0..104.

FORMULA

c = Gamma(4/3)/(4*Pi/3)^(1/3).

EXAMPLE

0.5539602783650902047011211914997...

MATHEMATICA

RealDigits[Gamma[4/3]/Surd[4 Pi/3, 3], 10, 120][[1]] (* Harvey P. Dale, Apr 16 2015 *)

CROSSREFS

Cf. A213055.

Sequence in context: A267033 A278928 A273826 * A232609 A225666 A175505

Adjacent sequences:  A213051 A213052 A213053 * A213055 A213056 A213057

KEYWORD

nonn,cons

AUTHOR

Stanislav Sykora, Jun 03 2012

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified May 22 20:08 EDT 2017. Contains 286906 sequences.