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 A127227 #2 Mar 31 2012 10:22:03
%S A127227 719,5039,20159,60479,151199,332639,665279,1235519,2162159,3603599,
%T A127227 5765759,8910719,13366079,19535039,27907199,39070079,53721359,
%U A127227 72681839,96909119,127511999,165765599,213127199,271252799,342014399,427517999
%N A127227 a(n)= numerator of ((n + 3)! - (n - 3)!)/(n!).
%t A127227 Table[Numerator[((n + 3)! - (n - 3)!)/(n!)], {n, 3, 30}]
%Y A127227 Cf. A028387, A062938, A127228, A127229, A127230.
%K A127227 nonn,frac
%O A127227 3,1
%A A127227 _Artur Jasinski_, Jan 09 2007