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 A233447 #6 Dec 21 2013 03:54:45 %S A233447 4,12,32,72,144,288,576,1080,1920,3456,6283,10996,18609,31901,53169, %T A233447 86400,137223,213458,337040,539264,847415,1309642,1992933,2989400, %U A233447 4543888,6815833,10097530,15146295,22980586,34470879,51150337,76725506,113925752,167537870,244126611 %N A233447 Floor(compositorial(n) / n!), that is, floor(A036691(n) / A000142(n)). %F A233447 a(n) = floor(A036691(n) / A000142(n)). %o A233447 (PARI) a(n)=my(c,p,N);N=n;c=4;p=1;while(n>0,if(!isprime(c),p=p*c;n=n-1);c=c+1);floor(p/N!) \\ _Ralf Stephan_, Dec 21 2013 %Y A233447 Cf. A000142, A036691. %K A233447 nonn %O A233447 1,1 %A A233447 _Alex Ratushnyak_, Dec 10 2013