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 A160387 #6 Dec 20 2015 00:14:20
%S A160387 3,2,4,0,1,5,6,2,5,2,3,8,4,1,8,5,7,9,1,5,7,0,7,3,6,5,1,2,3,1,2,5,7,8,
%T A160387 2,7,0,2,4,1,9,0,8,4,8,9,4,2,6,4,6,0,7,1,6,4,5,3,9,9,9,6,5,5,3,5,2,8,
%U A160387 8,9,4,8,9,3,5,2,2,4,6,2,7,2,6,1,9,3,6,9,6,0,7,6,6,3,5,8,7,9,9,9,9,2,3,8,0
%N A160387 Decimal expansion of 4^5 * Sum_{n>=0} 1/4^(2^n).
%H A160387 Harry J. Smith, <a href="/A160387/b160387.txt">Table of n, a(n) for n = 3..20000</a>
%e A160387 324.0156252384185791570736512312578270241908489426460716453999655352889...
%o A160387 (PARI) { default(realprecision, 20080); x=4^5*suminf(n=0, 1/4^(2^n))/100; for (n=3, 20000, d=floor(x); x=(x-d)*10; write("b160387.txt", n, " ", d)); }
%Y A160387 Cf. A006465 Continued fraction.
%K A160387 nonn,cons
%O A160387 3,1
%A A160387 _Harry J. Smith_, May 12 2009
%E A160387 Fixed my PARI program, had -n _Harry J. Smith_, May 19 2009