A282152 Decimal expansion of 20/log(10).

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

Offset: 1

Author

Arkadiusz Wesolowski, Feb 20 2017

Keywords

• nonn
• cons

Examples

			1 neper = 8.685889638 dB.
8.685889638065036553022578378332101645887940116073331322289075663317292984177...
		

References

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

Links

• Wikipedia, Neper
• Index entries for transcendental numbers

Crossrefs

Cf. A002392.

Programs

Magma

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

Mathematica

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

PARI

20/log(10)

Formula

Equals 20*A002285 = 20/A002392.