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 A016653 #23 Jul 22 2025 07:12:48
%S A016653 3,4,0,1,1,9,7,3,8,1,6,6,2,1,5,5,3,7,5,4,1,3,2,3,6,6,9,1,6,0,6,8,8,9,
%T A016653 9,1,2,2,4,8,5,9,2,0,4,6,4,5,1,5,2,2,4,2,7,7,6,8,0,2,2,2,3,4,6,0,5,0,
%U A016653 6,6,9,0,2,8,9,5,9,6,1,4,4,7,1,0,9,6,1,2,9,5,9,9,0,3,3,3,0,3,8
%N A016653 Decimal expansion of log(30).
%D A016653 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 A016653 Harry J. Smith, <a href="/A016653/b016653.txt">Table of n, a(n) for n = 1..20000</a>
%H A016653 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 A016653 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%F A016653 Equals A002391 + A002392. - _R. J. Mathar_, Jul 22 2025
%e A016653 3.401197381662155375413236691606889912248592046451522427768022234605066....
%t A016653 RealDigits[Log[30], 10, 120][[1]] (* _Vincenzo Librandi_, Jun 21 2015 *)
%o A016653 (PARI) default(realprecision, 20080); x=log(30); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b016653.txt", n, " ", d)); \\ _Harry J. Smith_, May 20 2009
%Y A016653 Cf. A016458 (continued fraction).
%K A016653 nonn,cons
%O A016653 1,1
%A A016653 _N. J. A. Sloane_