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A099873 Decimal expansion of Sum_{n>=2} ((-1)^n)/(log(n)^n). 3
1, 5, 2, 8, 3, 2, 1, 4, 1, 1, 1, 9, 2, 6, 4, 4, 9, 1, 0, 1, 6, 8, 5, 1, 3, 4, 8, 5, 9, 6, 5, 9, 8, 7, 8, 2, 0, 6, 2, 6, 5, 5, 8, 3, 3, 3, 1, 0, 0, 8, 2, 3, 1, 3, 8, 4, 6, 4, 7, 1, 0, 8, 1, 8, 7, 8, 9, 5, 5, 5, 3, 9, 3, 6, 5, 8, 0, 8, 5, 0, 3, 1, 4, 6, 1, 8, 1, 9, 7, 1, 7, 2, 0, 2, 1, 8, 0, 4, 0, 0, 7, 1, 1, 2, 9 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..1000

EXAMPLE

1.52832141119264491016851348596598782062655833310082313846471081878...

MATHEMATICA

RealDigits[ Sum[ N[(-1)^n/Log[n]^n, 128], {n, 2, 160}], 10, 111][[1]] (* Robert G. Wilson v, Dec 21 2004 *)

PROG

(PARI) sumalt(n=2, ((-1)^(n))/(log(n)^n))

(MAGMA) SetDefaultRealField(RealField(100)); [(&+[(-1)^k/Log(k)^k: k in [2..1000]])]; // G. C. Greubel, Nov 20 2018

(Sage) numerical_approx(sum((-1)^k/log(k)^k for k in [2..1000]), digits=100) # G. C. Greubel, Nov 20 2018

CROSSREFS

Cf. A099871.

Sequence in context: A013674 A155975 A152956 * A185353 A168202 A153455

Adjacent sequences:  A099870 A099871 A099872 * A099874 A099875 A099876

KEYWORD

cons,easy,nonn

AUTHOR

Mark Hudson (mrmarkhudson(AT)hotmail.com), Nov 02 2004

STATUS

approved

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Last modified February 19 19:06 EST 2020. Contains 332047 sequences. (Running on oeis4.)