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A244009 Decimal expansion of 1 - log(2). 4
3, 0, 6, 8, 5, 2, 8, 1, 9, 4, 4, 0, 0, 5, 4, 6, 9, 0, 5, 8, 2, 7, 6, 7, 8, 7, 8, 5, 4, 1, 8, 2, 3, 4, 3, 1, 9, 2, 4, 4, 9, 9, 8, 6, 5, 6, 3, 9, 7, 4, 4, 7, 4, 5, 8, 7, 9, 3, 1, 9, 9, 9, 0, 5, 0, 6, 6, 0, 6, 3, 7, 8, 0, 3, 0, 3, 0, 5, 2, 8, 4, 3, 9, 4, 1, 3, 6, 6, 7, 3, 0, 0, 3, 5, 8, 1, 3, 1, 2, 4, 5, 7, 9, 9, 8, 5 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Fraction of numbers which are sqrt-smooth, see A048098 and A063539. - Charles R Greathouse IV, Jul 14 2014

LINKS

Table of n, a(n) for n=0..105.

Donald E. Knuth and Luis Trabb Pardo, Analysis of a simple factorization algorithm, Theoretical Computer Science 3:3 (1976), pp. 321-348.

Index entries for transcendental numbers

FORMULA

sum(1/(2*k*(2*k+1)), k>0) = A239354 + 1/4 = A188859/2.

EXAMPLE

0.30685281944005469058276787854...

MAPLE

f:= sum(1/(2*k*(2*k+1)), k=1..infinity):

s:= convert(evalf(f, 140), string):

seq(parse(s[i+1]), i=1..106);  # Alois P. Heinz, Jun 17 2014

MATHEMATICA

RealDigits[1-Log[2], 10, 120][[1]] (* Harvey P. Dale, Sep 23 2016 *)

PROG

(PARI) 1-log(2) \\ Charles R Greathouse IV, Jul 14 2014

CROSSREFS

Cf. A002162, A239354.

Sequence in context: A016598 A119583 A309604 * A321482 A182042 A011415

Adjacent sequences:  A244006 A244007 A244008 * A244010 A244011 A244012

KEYWORD

nonn,cons

AUTHOR

Franklin T. Adams-Watters, Jun 17 2014

STATUS

approved

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Last modified November 11 16:07 EST 2019. Contains 329019 sequences. (Running on oeis4.)