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 A109097 #9 Sep 02 2013 12:57:35 %S A109097 8,9,24,72,96,216,288,480,864,1152,1440,2880,3456,4320,5760,8640, %T A109097 13824,17280,20160,25920,28800,34560,60480,69120,86400 %N A109097 Numbers n such that n! is the product of exactly four smaller factorials. %e A109097 86400! = 3! * 5! * 5! * 86399!, so 86400 is in the sequence. %Y A109097 Cf. A034878, A001013, A003135, A058295, A075082, A109095, A109096. %K A109097 nonn %O A109097 1,1 %A A109097 _Jud McCranie_, Jun 19 2005 %E A109097 Definition corrected by _Jon E. Schoenfield_, Jul 02 2010