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 A127298 #2 Mar 31 2012 13:21:14 %S A127298 1,1,2,5,30,504,1978,714840,500421564,4855562127780,1169461626163992, %T A127298 112848995546998874467920,7363180440 %N A127298 Least common multiple of all cycle sizes in range [A014137(n-1)..A014138(n-1)] of permutation A127289/A127290. %C A127298 Note the non-monotone drop from a(11) to a(12). Cf. A127297. %K A127298 nonn %O A127298 0,3 %A A127298 _Antti Karttunen_, Jan 16 2007