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 A066026 #16 Jul 04 2019 18:39:29
%S A066026 0,1,2,4,5,7,9,11,13,16,18,20,23,26,28,31,34,37,40,43,46,49,52,55,59,
%T A066026 62,65,68,72,75,79,82,86,89,93,96,100,103,107,111,115,118,122,126,130,
%U A066026 133,137,141,145,149,153,157,161,165,169,173,177,181,185,189,193,197,202
%N A066026 a(n) = ceiling(log(n!)).
%H A066026 Harry J. Smith, <a href="/A066026/b066026.txt">Table of n, a(n) for n = 1..1000</a>
%t A066026 Ceiling[Log[Range[70]!]] (* _Harvey P. Dale_, Jul 23 2012 *)
%o A066026 (PARI) { for (n=1, 1000, a=ceil(log(n!)); write("b066026.txt", n, " ", a) ) } \\ _Harry J. Smith_, Nov 07 2009
%o A066026 (PARI) a(n) = ceil(lngamma(n+1)) \\ _Michel Marcus_, Jun 29 2015
%Y A066026 Cf. A025201, A050502, A034886.
%K A066026 nonn
%O A066026 1,3
%A A066026 Robert A. Stump (bee_ess107(AT)yahoo.com), Dec 11 2001
%E A066026 Terms a(51)-a(63) from _Harry J. Smith_, Nov 07 2009