This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A282152 #22 Sep 08 2022 08:46:18 %S A282152 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 A282152 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 A282152 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 A282152 Decimal expansion of 20/log(10). %D A282152 Herman Medwin, "Sounds in the Sea: From Ocean Acoustics to Acoustical", Cambridge University Press, 2005, pp. 68-70. %H A282152 Wikipedia, <a href="https://en.wikipedia.org/wiki/Neper">Neper</a> %H A282152 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %F A282152 Equals 20*A002285 = 20/A002392. %e A282152 1 neper = 8.685889638 dB. %e A282152 8.685889638065036553022578378332101645887940116073331322289075663317292984177... %t A282152 RealDigits[20/Log[10], 10, 111][[1]] (* _Robert G. Wilson v_, Feb 20 2017 *) %o A282152 (Magma) SetDefaultRealField(RealField(105)); n:=20/Log(10); Reverse(Intseq(Floor(10^104*n))); %o A282152 (PARI) 20/log(10) %Y A282152 Cf. A002392. %K A282152 nonn,cons %O A282152 1,1 %A A282152 _Arkadiusz Wesolowski_, Feb 20 2017