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A164109
Decimal expansion of Pi^4/3.
10
3, 2, 4, 6, 9, 6, 9, 7, 0, 1, 1, 3, 3, 4, 1, 4, 5, 7, 4, 5, 4, 8, 0, 1, 1, 0, 8, 9, 6, 2, 3, 5, 0, 3, 7, 0, 8, 3, 2, 4, 2, 5, 2, 8, 5, 5, 7, 5, 6, 1, 8, 0, 7, 2, 3, 0, 4, 8, 9, 2, 8, 6, 4, 6, 3, 3, 2, 3, 6, 1, 8, 4, 8, 5, 6, 0, 9, 0, 6, 5, 3, 9, 6, 7, 0, 7, 2, 8, 9, 0, 7, 8, 2, 5, 0, 9, 9, 7, 5, 1, 6, 9, 8, 9, 7
OFFSET
2,1
COMMENTS
Surface area of the 8-dimensional unit sphere.
LINKS
Eric Weisstein's World of Mathematics, Hypersphere.
Wikipedia, Hypersphere
Ce Xu and Jianqiang Zhao, Sun's Three Conjectures on Apéry-like Sums Involving Harmonic Numbers, arXiv:2203.04184 [math.NT], 2022.
FORMULA
Equals 8*A164108 = A019670*A091925 = A092425/3.
EXAMPLE
Equals 32.4696970113341457454801108962350370832425285..
MATHEMATICA
RealDigits[Pi^4/3, 10, 120][[1]] (* Harvey P. Dale, Jul 31 2014 *)
PROG
(PARI) Pi^4/3 \\ G. C. Greubel, Sep 11 2017
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
R. J. Mathar, Aug 10 2009
STATUS
approved