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 A016662 #25 May 15 2019 03:05:32
%S A016662 3,6,6,3,5,6,1,6,4,6,1,2,9,6,4,6,4,2,7,4,4,8,7,3,2,6,7,8,4,8,7,8,4,4,
%T A016662 3,0,9,4,5,2,7,5,8,5,0,2,5,8,2,9,5,6,5,6,8,1,5,3,7,3,9,8,4,4,3,0,0,9,
%U A016662 5,8,9,6,0,5,4,3,0,1,9,1,4,6,2,7,3,1,9,0,4,1,8,2,5,4,2,2,1,5,7
%N A016662 Decimal expansion of log(39).
%D A016662 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 A016662 Harry J. Smith, <a href="/A016662/b016662.txt">Table of n, a(n) for n = 1..20000</a>
%H A016662 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 A016662 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%F A016662 Equals A002391 + A016636. - _Michel Marcus_, Jan 27 2017
%e A016662 3.663561646129646427448732678487844309452758502582956568153739844300958....
%p A016662 Digits:=100: evalf(log(39)); # _Wesley Ivan Hurt_, Jan 27 2017
%t A016662 RealDigits[Log[39], 10, 120][[1]] (* _Vincenzo Librandi_, Jun 21 2015 *)
%o A016662 (PARI) default(realprecision, 20080); x=log(39); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b016662.txt", n, " ", d)); \\ _Harry J. Smith_, May 21 2009
%Y A016662 Cf. A016467 (continued fraction).
%Y A016662 Cf. A002391, A016636.
%K A016662 nonn,cons
%O A016662 1,1
%A A016662 _N. J. A. Sloane_