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 A075358 #4 Dec 05 2013 19:55:37 %S A075358 1,3,20,30,336,5040,7920,154440,3603600,5765760,160392960,5079110400, %T A075358 8204716800,296541907200,11861676288000,520431047136000, %U A075358 857180548224000,41430393164160000,2163102632570880000,3569119343741952000 %N A075358 a(n) = smallest (n+1)(n+2)...(n+k) that is >= n!. %F A075358 a(n) = (n+A075357(n))!/n!. - _David Wasserman_, Jan 16 2005 %Y A075358 Cf. A075357. %K A075358 nonn %O A075358 1,2 %A A075358 _Amarnath Murthy_, Sep 19 2002 %E A075358 More terms from _David Wasserman_, Jan 16 2005