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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 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 November 16 15:26 EST 2018. Contains 317274 sequences. (Running on oeis4.)