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A135005 Decimal expansion of 5/e. 2
1, 8, 3, 9, 3, 9, 7, 2, 0, 5, 8, 5, 7, 2, 1, 1, 6, 0, 7, 9, 7, 7, 6, 1, 8, 8, 5, 0, 8, 0, 7, 3, 0, 4, 3, 3, 7, 2, 2, 9, 0, 5, 5, 6, 5, 5, 1, 5, 8, 8, 3, 9, 1, 7, 2, 5, 3, 9, 1, 8, 4, 0, 0, 8, 4, 8, 7, 3, 0, 7, 4, 7, 8, 7, 2, 4, 4, 9, 9, 0, 1, 6, 7, 8, 5, 7, 3, 6, 3, 7, 1, 7, 2, 9, 5, 9, 8, 2, 1, 8, 7, 3, 3, 1, 3, 6, 6, 2, 6 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The fraction of substituents which become isolated in a simple polymer model is 1/10 this number, see Flory 1939 (and 1936). - Charles R Greathouse IV, Nov 30 2012

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..2000

Paul J. Flory, Intramolecular reaction between neighboring substituents of vinyl polymers, Journal of the American Chemical Society 61:6 (1939), pp. 1518-1521.

Paul J. Flory, Molecular size distribution in linear condensation polymers, Journal of the American Chemical Society 58:10 (1936), pp. 1877-1885.

FORMULA

Equals 5/A001113 and 5*A068985. - Michel Marcus, Sep 17 2016

EXAMPLE

5/e = 1.839397205857211607977618850807304337229...

1/(2e) = 0.1839397205857211607977618850807304337229... (see Greathouse's comment).

MATHEMATICA

RealDigits[5/E , 10, 50][[1]] (* G. C. Greubel, Sep 16 2016 *)

PROG

(PARI) 5/exp(1) \\ Michel Marcus, Sep 17 2016

CROSSREFS

Cf. A001113, A068985.

Sequence in context: A019938 A170937 A058265 * A090734 A200614 A011467

Adjacent sequences:  A135002 A135003 A135004 * A135006 A135007 A135008

KEYWORD

cons,nonn

AUTHOR

Omar E. Pol, Nov 15 2007

STATUS

approved

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Last modified April 8 07:59 EDT 2020. Contains 333313 sequences. (Running on oeis4.)