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 A016638 #25 Jun 10 2024 07:14:52
%S A016638 2,7,0,8,0,5,0,2,0,1,1,0,2,2,1,0,0,6,5,9,9,6,0,0,4,5,7,0,1,4,8,7,1,3,
%T A016638 3,4,4,1,7,3,0,9,1,9,1,2,0,9,1,2,6,7,1,7,3,6,4,7,3,4,2,2,2,5,1,1,1,6,
%U A016638 7,3,2,8,0,9,2,6,2,6,6,7,3,1,5,0,3,7,4,9,6,3,2,9,0,6,9,1,1,6,9,9,5,8,7,9,3
%N A016638 Decimal expansion of log(15).
%D A016638 M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, 1964 (and various reprintings), p. 2.
%H A016638 Harry J. Smith, <a href="/A016638/b016638.txt">Table of n, a(n) for n = 1..20000</a>
%H A016638 M. Abramowitz and I. A. Stegun, eds., <a href="http://www.convertit.com/Go/ConvertIt/Reference/AMS55.ASP">Handbook of Mathematical Functions</a>, National Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 [alternative scanned copy].
%H A016638 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%F A016638 Equals A002391 + A016628. - _R. J. Mathar_, Jun 10 2024
%e A016638 2.708050201102210065996004570148713344173091912091267173647342225111673....
%t A016638 RealDigits[Log[15], 10, 120][[1]] (* _Vincenzo Librandi_, Jun 21 2015 *)
%o A016638 (PARI) default(realprecision, 20080); x=log(15); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b016638.txt", n, " ", d)); \\ _Harry J. Smith_, May 16 2009
%Y A016638 Cf. A016443 (continued fraction).
%K A016638 nonn,cons
%O A016638 1,1
%A A016638 _N. J. A. Sloane_
%E A016638 Final digits of sequence corrected using the b-file. - _N. J. A. Sloane_, Aug 30 2009