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 A127295 #2 Mar 31 2012 13:21:14 %S A127295 1,1,2,6,30,1260,1680,19825740,10028280,182416547040,271239404020200, %T A127295 219240769050559711332360,6467876945923041743744426827092900, %U A127295 27867228909478820644943875389480 %N A127295 Least common multiple of all cycle sizes in range [A014137(n-1)..A014138(n-1)] of permutation A127291/A127292. %K A127295 nonn %O A127295 0,3 %A A127295 _Antti Karttunen_, Jan 16 2007