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%I #22 Sep 08 2022 08:46:18
%S 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,
%T 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,
%U 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
%N Decimal expansion of 20/log(10).
%D Herman Medwin, "Sounds in the Sea: From Ocean Acoustics to Acoustical", Cambridge University Press, 2005, pp. 68-70.
%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Neper">Neper</a>
%H <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%F Equals 20*A002285 = 20/A002392.
%e 1 neper = 8.685889638 dB.
%e 8.685889638065036553022578378332101645887940116073331322289075663317292984177...
%t RealDigits[20/Log[10], 10, 111][[1]] (* _Robert G. Wilson v_, Feb 20 2017 *)
%o (Magma) SetDefaultRealField(RealField(105)); n:=20/Log(10); Reverse(Intseq(Floor(10^104*n)));
%o (PARI) 20/log(10)
%Y Cf. A002392.
%K nonn,cons
%O 1,1
%A _Arkadiusz Wesolowski_, Feb 20 2017
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