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 A016449 #15 Mar 22 2024 06:21:32
%S A016449 3,22,2,5,1,5,2,1,3,2,5,2,1,9,4,1,2,26,1,1,1,51,1,2,7,11,1,1,1,10,4,1,
%T A016449 6,19,5,1,1,3,2,6,1,5,2,3,20,11,7,2,2,1,5,1,4,1,1,1,1,1,1,18,1,13,3,2,
%U A016449 2,3,4,3,4,1,2,10,1,6,28,7
%N A016449 Continued fraction for log(21).
%H A016449 Harry J. Smith, <a href="/A016449/b016449.txt">Table of n, a(n) for n = 1..20000</a>
%e A016449 3.04452243772342299650059798... = 3 + 1/(22 + 1/(2 + 1/(5 + 1/(1 + ...)))). - _Harry J. Smith_, May 17 2009
%t A016449 ContinuedFraction[Log[21], 100] (* _Paolo Xausa_, Mar 22 2024 *)
%o A016449 (PARI) { allocatemem(932245000); default(realprecision, 21000); x=contfrac(log(21)); for (n=1, 20000, write("b016449.txt", n, " ", x[n])); } \\ _Harry J. Smith_, May 17 2009
%Y A016449 Cf. A016644 Decimal expansion. - _Harry J. Smith_, May 17 2009
%K A016449 nonn,cofr
%O A016449 1,1
%A A016449 _N. J. A. Sloane_