A164104 Decimal expansion of 8*Pi^2/3.

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

Offset: 2

Author

R. J. Mathar, Aug 10 2009

Keywords

• cons
• nonn

Comments

Surface area of the 5-dimensional unit sphere.

Examples

			Equals 26.318945069571622983558642666336...
		

Links

• G. C. Greubel, Table of n, a(n) for n = 2..5000
• Eric Weisstein, Hypersphere, Wolfram Mathworld.
• Wikipedia, Hypersphere
• Index entries for transcendental numbers

Crossrefs

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

Programs

Mathematica

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

PARI

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

Formula

Equals 5*A164103 = 10 * A019699 * A019692.

Extensions

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