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A076668
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Decimal expansion of sqrt(2/Pi).
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6
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7, 9, 7, 8, 8, 4, 5, 6, 0, 8, 0, 2, 8, 6, 5, 3, 5, 5, 8, 7, 9, 8, 9, 2, 1, 1, 9, 8, 6, 8, 7, 6, 3, 7, 3, 6, 9, 5, 1, 7, 1, 7, 2, 6, 2, 3, 2, 9, 8, 6, 9, 3, 1, 5, 3, 3, 1, 8, 5, 1, 6, 5, 9, 3, 4, 1, 3, 1, 5, 8, 5, 1, 7, 9, 8, 6, 0, 3, 6, 7, 7, 0, 0, 2, 5, 0, 4, 6, 6, 7, 8, 1, 4, 6, 1, 3, 8, 7, 2, 8, 6, 0, 6, 0
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OFFSET
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0,1
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COMMENTS
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This is the limit of (n+1)!!/n!!/n^(1/2) at n_even->inf.
Expected value of |x - mu|/sigma for normal distribution with mean mu and standard deviation sigma (i.e., the normalized mean absolute deviation). - Stanislav Sykora, Jun 30 2017
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LINKS
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FORMULA
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EXAMPLE
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0.79788456080286535587989211986876373695171726232986931533...
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MATHEMATICA
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RealDigits[Sqrt[2/Pi], 10, 120][[1]] (* Harvey P. Dale, Feb 05 2012 *)
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PROG
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(Magma) pi:=Sqrt(2/Pi(RealField(110))); Reverse(Intseq(Floor(10^110*pi))); // Vincenzo Librandi, Jul 01 2017
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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Leading zero removed, offset changed by R. J. Mathar, Feb 05 2009
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STATUS
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approved
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