OFFSET
2,1
COMMENTS
Surface area of the 7-dimensional unit sphere.
LINKS
G. C. Greubel, Table of n, a(n) for n = 2..5000
Eric Weisstein, Hypersphere, Wolfram Mathworld.
Wikipedia, Hypersphere
EXAMPLE
Equals 33.07336179231980818717473607157482154904030780...
MATHEMATICA
RealDigits[16*Pi^3/15, 10, 50][[1]] (* G. C. Greubel, Sep 11 2017 *)
PROG
(PARI) 16*Pi^3/15 \\ G. C. Greubel, Sep 11 2017
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
R. J. Mathar, Aug 10 2009
STATUS
approved