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 A067104 #8 Jun 09 2020 11:49:27
%S A067104 1,1,1,10,1022,102256,102255452,1022553862210,102255378766606673,
%T A067104 10225537868377981588347,10225537868286872045185666318,
%U A067104 102255378682858781228966381713174081,10225537868285867355405173700779791589867289
%N A067104 a(n) = floor[ X/Y], where X = concatenation of first n factorials and Y = concatenation of first n natural numbers.
%H A067104 Harvey P. Dale, <a href="/A067104/b067104.txt">Table of n, a(n) for n = 1..44</a>
%e A067104 a(5) = floor [12624120/12345] = floor[1022.60996354799513973268529769137] = 1022.
%t A067104 Table[Floor[FromDigits[Flatten[IntegerDigits/@(Range[n]!)]]/FromDigits[ Flatten[IntegerDigits/@Range[n]]]],{n,15}] (* _Harvey P. Dale_, Jun 09 2020 *)
%Y A067104 Cf. A067091, A067092, A067093, A067094, A067095, A067096, A067097, A067098, A067099, A067100, A067101, A067102, A067103.
%K A067104 easy,nonn,base
%O A067104 1,4
%A A067104 _Amarnath Murthy_, Jan 07 2002
%E A067104 Corrected and extended by Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 01 2003
%E A067104 Edited by _Charles R Greathouse IV_, Apr 27 2010