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 A016672 #22 Aug 07 2023 17:54:53
%S A016672 3,8,9,1,8,2,0,2,9,8,1,1,0,6,2,6,6,1,0,2,1,0,7,0,5,4,8,6,8,8,6,3,5,9,
%T A016672 4,5,9,2,7,4,1,6,9,4,5,9,1,6,3,7,2,2,3,7,6,9,1,8,7,8,0,2,9,9,8,7,5,1,
%U A016672 5,9,7,2,5,5,0,4,1,3,8,5,3,5,5,7,5,3,1,6,9,9,7,1,7,5,7,4,3,0,5
%N A016672 Decimal expansion of log(49).
%D A016672 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 A016672 Harry J. Smith, <a href="/A016672/b016672.txt">Table of n, a(n) for n = 1..20000</a>
%H A016672 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 A016672 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%F A016672 Equals 2*A016630. - _Alois P. Heinz_, Aug 07 2023
%e A016672 3.891820298110626610210705486886359459274169459163722376918780299875159....
%t A016672 RealDigits[Log[49], 10, 120][[1]] (* _Vincenzo Librandi_, Jun 21 2015 *)
%o A016672 (PARI) default(realprecision, 20080); x=log(49); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b016672.txt", n, " ", d)); \\ _Harry J. Smith_, May 21 2009
%Y A016672 Cf. A016477 (continued fraction), A016630.
%K A016672 nonn,cons
%O A016672 1,1
%A A016672 _N. J. A. Sloane_