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A282152 Decimal expansion of 20/log(10). 0
8, 6, 8, 5, 8, 8, 9, 6, 3, 8, 0, 6, 5, 0, 3, 6, 5, 5, 3, 0, 2, 2, 5, 7, 8, 3, 7, 8, 3, 3, 2, 1, 0, 1, 6, 4, 5, 8, 8, 7, 9, 4, 0, 1, 1, 6, 0, 7, 3, 3, 3, 1, 3, 2, 2, 2, 8, 9, 0, 7, 5, 6, 6, 3, 3, 1, 7, 2, 9, 2, 9, 8, 4, 1, 7, 7, 4, 1, 5, 4, 9, 4, 5, 8, 4, 4, 9, 8, 9, 8, 6, 7, 6, 8, 6, 3, 4, 9, 6, 6, 3, 7, 4, 1, 2 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

Herman Medwin, "Sounds in the Sea: From Ocean Acoustics to Acoustical", Cambridge University Press, 2005, pp. 68-70.

LINKS

Table of n, a(n) for n=1..105.

Wikipedia, Neper

Index entries for transcendental numbers

FORMULA

Equals 20*A002285 = 20/A002392.

EXAMPLE

1 neper = 8.685889638 dB.

8.685889638065036553022578378332101645887940116073331322289075663317292984177...

MATHEMATICA

RealDigits[20/Log[10], 10, 111][[1]] (* Robert G. Wilson v, Feb 20 2017 *)

PROG

(MAGMA) SetDefaultRealField(RealField(105)); n:=20/Log(10); Reverse(Intseq(Floor(10^104*n)));

(PARI) 20/log(10)

CROSSREFS

Cf. A002392.

Sequence in context: A302682 A011298 A188655 * A191909 A247559 A246768

Adjacent sequences:  A282149 A282150 A282151 * A282153 A282154 A282155

KEYWORD

nonn,cons

AUTHOR

Arkadiusz Wesolowski, Feb 20 2017

STATUS

approved

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Last modified October 25 11:29 EDT 2021. Contains 348251 sequences. (Running on oeis4.)