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 A115425 #5 Oct 31 2013 12:17:37
%S A115425 2,4,6,8,4,8,12,16,12,24,36,48,48,96,144,192,240,480,720,960,1440,
%T A115425 2880,4320,5760,10080,20160,30240,40320,80640,161280,241920,322560,
%U A115425 725760,1451520,2177280,2903040,7257600,14515200,21772800,29030400,79833600
%N A115425 The first four terms of the sequence are doubled, then those numbers are tripled and then those numbers are quadrupled, etc.
%t A115425 Table[n!{2, 4, 6, 8}, {n, 11}] // Flatten (* _Robert G. Wilson v_ *)
%K A115425 nonn
%O A115425 0,1
%A A115425 Albert S. Castillo (roadraptor(AT)sbcglobal.net), Mar 08 2006
%E A115425 More terms from _Robert G. Wilson v_, Apr 12 2006