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 A130379 #2 Mar 31 2012 13:21:14 %S A130379 1,1,2,5,24,35,17304,105210,15002667388800,2803962610087320, %T A130379 390995845903819693817280,4427769139935736194600, %U A130379 426341479886584667397117049422960 %N A130379 Least common multiple of all cycle sizes in range [A014137(n-1)..A014138(n-1)] of permutation A130369/A130370. %C A130379 Note the non-monotone drop from a(10) to a(11). %K A130379 nonn %O A130379 0,3 %A A130379 _Antti Karttunen_, Jun 05 2007