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A135821
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Decimal expansion of sqrt(4*exp(1)-1).
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0
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3, 1, 4, 2, 1, 5, 3, 2, 9, 2, 5, 4, 2, 5, 8, 0, 7, 3, 3, 7, 0, 0, 6, 8, 3, 5, 0, 4, 5, 3, 1, 4, 9, 6, 6, 0, 6, 9, 7, 0, 5, 3, 8, 3, 5, 8, 4, 5, 8, 1, 5, 3, 0, 4, 1, 9, 2, 3, 4, 6, 2, 5, 5, 0, 3, 9, 2, 2, 3, 4, 9, 8, 4, 3, 9, 3, 5, 4, 4, 4, 0, 2, 1, 4, 5, 7, 5, 1, 3, 4, 4, 5, 7, 8, 9, 4, 5, 1, 4
(list; constant; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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FORMULA
| sqrt(sum((1/2*n^3+1/2*n+1)/n!,n=1..inf))[from Alexander R. Povolotsky Oct 1 2011]
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EXAMPLE
| 3.1421532925425807337006835045314966069705383584581530419234...
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MATHEMATICA
| RealDigits[Sqrt[4E - 1], 10, 100][[1]] (* Alonso del Arte Oct 01 2011 *)
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CROSSREFS
| Sequence in context: A190457 A179833 A131033 * A134545 A174907 A135822
Adjacent sequences: A135818 A135819 A135820 * A135822 A135823 A135824
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KEYWORD
| nonn,cons
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AUTHOR
| Alexander Povolotsky, Mar 06 2008
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EXTENSIONS
| Offset corrected R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 26 2009
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