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A274989 Decimal expansion of log(sqrt(10)). 0
1, 1, 5, 1, 2, 9, 2, 5, 4, 6, 4, 9, 7, 0, 2, 2, 8, 4, 2, 0, 0, 8, 9, 9, 5, 7, 2, 7, 3, 2, 9, 2, 8, 1, 8, 2, 4, 5, 6, 0, 4, 2, 7, 9, 8, 7, 1, 9, 8, 7, 1, 5, 2, 1, 8, 6, 0, 5, 8, 0, 4, 5, 4, 4, 4, 3, 8, 3, 4, 2, 4, 1, 8, 2, 8, 8, 8, 1, 2, 0, 4, 1, 2, 8, 2, 6, 5 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

This is the ratio between the bel and the neper, i.e., 1 bel = log(sqrt(10)) nepers.

LINKS

Table of n, a(n) for n=0..86.

J. Valdes, The unit one, the neper, the bel and the future of the SI, Metrologia, Volume 39, Number 6 (2002), 543-550.

Wikipedia, Decibel

Index entries for transcendental numbers

FORMULA

Equals A002392/2. - Michel Marcus, Nov 19 2016

EXAMPLE

0.1151292546497022842008995727329281824560427...

PROG

(PARI) terms(n) = my(x=log(sqrt(10)), i=0); while(1, my(d=floor(x)); x=(x-d)*10; print1(d, ", "); i++; if(i==n, break))

terms(100) \\ print initial 100 terms

CROSSREFS

Cf. A002392.

Sequence in context: A073324 A021665 A226613 * A328199 A289690 A088781

Adjacent sequences:  A274986 A274987 A274988 * A274990 A274991 A274992

KEYWORD

nonn,cons

AUTHOR

Felix Fröhlich, Nov 11 2016

STATUS

approved

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Last modified November 13 17:34 EST 2019. Contains 329106 sequences. (Running on oeis4.)