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 A045519 #15 Jul 19 2020 02:35:30 %S A045519 87178291200,8841761993739701954543616000000, %T A045519 8222838654177922817725562880000000, %U A045519 8683317618811886495518194401280000000 %N A045519 Factorials with initial digit '8'. %C A045519 Benford's law shows that this sequence will contain about (log 9 - log 8)/log 10 =~ 5% of factorials. [_Charles R Greathouse IV_, Nov 13 2010] %H A045519 <a href="/index/Be#Benford">Index entries for sequences related to Benford's law</a> %F A045519 a(n) = A000142(A045527(n)). - _Amiram Eldar_, Jul 19 2020 %Y A045519 For factorials with initial digit d (1 <= d <= 9) see A045509, A045510, A045511, A045516, A045517, A045518, A282021, A045519; A045520, A045521, A045522, A045523, A045524, A045525, A045526, A045527, A045528, A045529. See also A000142. %K A045519 nonn,base %O A045519 1,1 %A A045519 _Jeff Burch_