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A164103
Decimal expansion of 8*Pi^2/15.
7
5, 2, 6, 3, 7, 8, 9, 0, 1, 3, 9, 1, 4, 3, 2, 4, 5, 9, 6, 7, 1, 1, 7, 2, 8, 5, 3, 3, 2, 6, 7, 2, 8, 0, 6, 0, 5, 5, 0, 0, 6, 3, 9, 6, 8, 3, 8, 6, 1, 7, 5, 5, 0, 0, 0, 7, 5, 3, 7, 8, 6, 3, 3, 3, 9, 8, 4, 0, 2, 3, 9, 0, 5, 2, 9, 0, 2, 4, 2, 7, 9, 6, 2, 6, 7, 6, 1, 2, 4, 8, 1, 9, 8, 3, 2, 2, 7, 8, 5, 6, 9, 7, 2, 8, 1
OFFSET
1,1
COMMENTS
Volume of the 5-dimensional unit sphere.
For all nonnegative integers n, let V_n be the volume of the n-dimensional unit sphere. If n != 5, then V_n < V_5, this constant (see A072345). - Rick L. Shepherd, Feb 23 2014
REFERENCES
David Wells, The Penguin Dictionary of Curious and Interesting Numbers. Penguin Books, NY, 1986, Revised edition 1987. See p. 67.
LINKS
Eric Weisstein, Hypersphere, Wolfram Mathworld.
Wikipedia, Hypersphere.
FORMULA
Equals A164104/5 = 4*A164102/15.
EXAMPLE
Equals 5.2637890139143245967117285332672806...
MATHEMATICA
RealDigits[8*Pi^2/15, 10, 100][[1]] (* G. C. Greubel, Apr 09 2017 *)
PROG
(PARI) 8*Pi^2/15 \\ G. C. Greubel, Apr 09 2017
CROSSREFS
Sequence in context: A021023 A078716 A308081 * A054863 A257812 A232356
KEYWORD
cons,nonn
AUTHOR
R. J. Mathar, Aug 10 2009
STATUS
approved