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A164104 Decimal expansion of 8*Pi^2/3. 4
2, 6, 3, 1, 8, 9, 4, 5, 0, 6, 9, 5, 7, 1, 6, 2, 2, 9, 8, 3, 5, 5, 8, 6, 4, 2, 6, 6, 6, 3, 3, 6, 4, 0, 3, 0, 2, 7, 5, 0, 3, 1, 9, 8, 4, 1, 9, 3, 0, 8, 7, 7, 5, 0, 0, 3, 7, 6, 8, 9, 3, 1, 6, 6, 9, 9, 2, 0, 1, 1, 9, 5, 2, 6, 4, 5, 1, 2, 1, 3, 9, 8, 1, 3, 3, 8, 0, 6, 2, 4, 0, 9, 9, 1, 6, 1, 3, 9, 2, 8, 4, 8, 6, 4, 0 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

2,1

COMMENTS

Surface area of the 5-dimensional unit sphere.

LINKS

G. C. Greubel, Table of n, a(n) for n = 2..5000

Eric Weisstein, Hypersphere, Wolfram Mathworld.

Wikipedia, Hypersphere

FORMULA

Equals 5*A164103 = 10 * A019699 * A019692.

EXAMPLE

Equals 26.318945069571622983558642666336...

MATHEMATICA

RealDigits[8*Pi^2/3, 10, 50][[1]] (* G. C. Greubel, Sep 11 2017 *)

PROG

(PARI) 8*Pi^2/3 \\ G. C. Greubel, Sep 11 2017

CROSSREFS

Cf. A019692, A019694, A164102, A091925, A164107, A164109.

Sequence in context: A059433 A021042 A136694 * A050138 A108443 A201761

Adjacent sequences:  A164101 A164102 A164103 * A164105 A164106 A164107

KEYWORD

cons,nonn,changed

AUTHOR

R. J. Mathar, Aug 10 2009

EXTENSIONS

A-number in formula corrected by R. J. Mathar, Aug 12 2010

STATUS

approved

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Last modified September 21 20:22 EDT 2017. Contains 292325 sequences.