A213054 Decimal expansion of first Chandrasekhar's nearest neighbor constant.

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

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.

Named after the Indian-American astrophysicist Subrahmanyan Chandrasekhar (1910-1995). - Amiram Eldar, Jun 27 2021

Links

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

S. Chandrasekhar, Stochastic problems in physics and astronomy, Reviews of modern physics, Vol. 15, No. 1 (1943), pp. 1-89.

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: A306982 A278928 A273826 * A232609 A225666 A365078

Adjacent sequences: A213051 A213052 A213053 * A213055 A213056 A213057

Keyword

nonn,cons

Author

Stanislav Sykora, Jun 03 2012

Status

approved